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| Number | Title | Issue Date |
| 4796511 | Electromagnetic projectile launching system An electromagnetic projectile launcher has a barrel (10) formed with parallel firing rails (13, 14) and separate supply conductors (18, 19) which are connected to the firing rails to supply firing current to one and receive the firing current from the oth... | 01/10/1989 |
| 4782972 | Collapsible file box A collapsible file box is disclosed which includes a rectangular base, a pair of generally rectangular ends adapted to extend vertically upwardly from the rectangular base, each end further including a plurality of side tabs extending outwardly from each ... | 11/08/1988 |
| 4777469 | Public terminal receptacle A public terminal receptacle for containing, protecting, and allowing a user access to a computer terminal, telecommunications device for the deaf, or another type of terminal which is telephonically linked and physically adjacent to a public telephone th... | 10/11/1988 |
| 4771384 | System and method for fragmentation mapping A system and method for the construction of one-dimensional maps from fragmentation data is disclosed. Particularly useful for construction of restriction maps of DNA, the system and method completely permutes sites, single digest fragments, and any avail... | 09/13/1988 |
| 4766072 | Vectors for in vitro production of RNA copies of either strand of a cloned DNA sequence In vitro production of RNA copies of either strand of any cloned DNA sequence may be obtained utilizing a unique cloning vector having two different opposed promoter sequences which are separated by a multiple cloning site. RNA polymerases which recognize... | 08/23/1988 |
| 4765339 | Closed loop dialysis system An apparatus and a method of use for removing specified dialyzable components from a complex reference fluid such as, for example, blood. The invention includes a semi-permeable tubular dialysis membrane, which is inserted into the reference fluid. An equ... | 08/23/1988 |
| 4764394 | Method and apparatus for plasma source ion implantation Ion implantation into surfaces of three-dimensional targets is achieved by forming an ionized plasma about the target within an enclosing chamber and applying a pulse of high voltage between the target and the conductive walls of the chamber. Ions from th... | 08/16/1988 |
| 4763658 | Dialysis system 2nd method An apparatus and a method of use for removing specified dialyzable components from a complex reference fluid such as, for example, blood. The invention includes a semi-permeable tubular dialysis membrane, which is inserted into the reference fluid. An equ... | 08/16/1988 |
| 4762182 | Auxiliary mounting device for cultivating implements An auxiliary mounting device for use with a tractor having a one-point tractor hitch. The auxiliary mounting device includes a body having a forward end and a rearward end with the longitudinal axis of the body extending therebetween. Means are provided f... | 08/09/1988 |
| 4761532 | Resistance welding apparatus A resistance welding apparatus (10) is disclosed which is particularly adapted for use in welding parts (27) into the interior surface of a metal tube (17) in a pre-determined pattern obtained by longitudinal and rotational indexing of the tube. An elonga... | 08/02/1988 |
| 4761545 | Tailored excitation for trapped ion mass spectrometry An ion cyclotron resonance cell has applied thereto an excitation which has a time domain waveform which is the inverse Fourier transform of a frequency domain excitation spectrum which has been chosen by the user to yield selective excitation and/or supp... | 08/02/1988 |
| 4753358 | Vial cap coupling device A vial cap coupling device for flexibly coupling together a vial and its sealing cap includes a cylindrical retainer having an inner surface which forms a cavity for snugly receiving the sealing cap and firmly engaging an outer surface of the cap, a slide... | 06/28/1988 |
| 4753024 | Animal foot rack and kit therefor A cured animal foot for mounting to a plaque includes an animal foot comprised of skin, bone, and flesh, having a lower portion with digits and an upper portion which at an upper end thereof has been cut from a leg of an animal, the upper and lower portio... | 06/28/1988 |
| 4753412 | Taxidermy mannikin mold for locating eyepieces in correct position A mold and molding method for forming a taxidermy animal head mannikin with artificial eyepieces molded therein in proper position includes a pair of mold cavity half parts each of the half parts having a cavity surface contoured for correct anatomical fo... | 06/28/1988 |
| 4746571 | X-ray detector efficiency standard for electron microscopes An X-ray detector efficiency standard is formed of multiple spherical particles of various materials distributed over the surface of a substrate. The particles are preferably formed of pure materials, such as pure elements and stoichiometric compounds, ha... | 05/24/1988 |
| 4744863 | Sealed cavity semiconductor pressure transducers and method of producing the same Sealed cavity structures suitable for use as pressure transducers are formed on a single surface of a semiconductor substrate (20) by, for example, deposit of a polycrystalline silicon layer (32) from silane gas over a relatively large silicon dioxide pos... | 05/17/1988 |
| 4742992 | Roofing membrane puller A roofing membrane puller for tautly pulling a water-proof membrane over a flat roof, even to the edges thereof, includes a frame, at least one anchor which maintains the frame in a selected position on the flat roof, a locking gripper having releasably l... | 05/10/1988 |
| 4741344 | Ear canal electrode A non-invasive, external ear canal electrode useful for transmitting sound stimulus to an ear canal and for conducting electrical signals picked up from the ear canal epidermal surface including a tube comprising electroconductive metal and having a resil... | 05/03/1988 |
| 4739900 | Reclosable dispenser package A reclosable dispenser package of thin flexible thermoformed plastic material and method of manufacture is disclosed, the package including a base with peripheral edges and a cover thermoformed from a sheet of plastic which includes a cover wall with a di... | 04/26/1988 |
| 4739883 | Reclosable display package A reclosable display package of thin flexible thermoformed plastic material includes a rear base having a recess for containing any articles to be displayed, and substantially flat mating surface surrounding the recess and extending upwardly to a rear top... | 04/26/1988 |
| 4740702 | Cryogenically cooled radiation detection apparatus A radiation detection apparatus, such as for the detection of infrared radiation, is formed of inner and outer cylindrical stainless steel vessels with the inner vessels supported from the top wall of the outer vessel by a thin, relatively long stainless ... | 04/26/1988 |
| 4738666 | Variable diameter catheter The present invention provides a variable diameter catheter which is folded in a longitudinal manner in order to reduce the diameter for convenient and less traumatic insertion into a body orifice. The fold in the catheter is maintained by a slidably remo... | 04/19/1988 |
| 4735921 | Nitridation of silicon and other semiconductors using alkali metal catalysts Nitride layers are formed on semiconductor substrates utilizing alkali metals as catalysts. The surface of the semiconductor substrate first has a thin layer of an alkali metal deposited thereon and then is exposed to nitrogen from a nitrogen source at te... | 04/05/1988 |
| 4736191 | Touch activated control method and apparatus A cursor control device (10) is provided which has a touch pad (14) formed of individual conductive plates (16) forming sectors of a circle. A user's touch on a dielectric layer (18) overlying the plates (16) is detected by individually charging and disch... | 04/05/1988 |
| 4730242 | Static power conversion and apparatus having essentially zero switching losses A high efficiency power converter is achieved utilizing a resonant DC link between a DC source, such as a converter rectifying power from an AC power system, to a variable frequency voltage source inverter. A resonant circuit composed of an inductor and c... | 03/08/1988 |
| 4729538 | Apparatus for hydraulically actuating a vehicle seat The present invention provides simple and effective mechanisms, apparatus and self contained fluid circuitry to hydraulically actuate the vehicle's seat in generally downward movement in response to general upward movement of the vehicle's terrain contact... | 03/08/1988 |
| 4726381 | Dialysis system and method An apparatus and a method of use for removing specified dialyzable components from a complex reference fluid such as, for example, blood. The invention includes a semi-permeable tubular dialysis membrane, which is inserted into the reference fluid. An equ... | 02/23/1988 |
| 4725753 | Piezoelectric transducer A piezoelectric transducer for use in precision remote movement of an object in an ultra-high vacuum environment is disclosed which includes an elongated central shaft with proximal end and distal end, a distal stop fixed to the distal end of the shaft wi... | 02/16/1988 |
| 4725968 | Disk drive testing method and apparatus A disk drive testing apparatus (20) is disclosed which provides substantially automatic cycling through various tests of disk drive units. A graphical display is provided on a screen (25) to the operator to allow the operator to determine whether the disk... | 02/16/1988 |
| 4723743 | Rack for holding paper and plastic grocery bags A rack which may be used for holding conventional paper grocery bags with foldable sidewalls or plastic bags having an open mouth and integral upwardly extendable handle loops located on opposite sides of the mouth, in an upright, open, supported position... | 02/09/1988 |
| 4724373 | Method and apparatus for flux and torque sensing in electrical machines To determine the flux in the air gap of an electrical machine having distributed stator windings, the voltages across two coils of a phase belt in certain phases of the stator are measured and the voltage across one coil in each phase belt is subtracted f... | 02/09/1988 |
| 4722343 | Method and apparatus for applying electrical stimulus pulses to a subject A method and apparatus for stimulating evoked potentials in a human subject maintains the common mode voltage at the stimulation electrodes substantially constant both before and during application of a stimulus pulse of constant current. A pair of resist... | 02/02/1988 |
| 4720047 | Auger for conveying materials such as manure An improved auger is used for conveying flowable materials, such as liquid and semi-solid manure, through a bed of a container such as a manure spreader and out through a discharge opening. The auger has a shaft with a back end and a front end, a continuo... | 01/19/1988 |
| 4719118 | Low calorie dairy snack product An expanded low calorie dairy snack food product and method of manufacture is disclosed. The product which consists of water and a dairy product will expand or puff with excellent structural integrity without the use of farinaceous or carbohydrate ingredi... | 01/12/1988 |
| 4718573 | Dispenser for elongated articles A dispenser for elongated articles that is especially adapted for convenient assembly. The dispenser has a generally rectangular storage bin having an inner chamber and an article discharge slot that extends substantially from side to side across the fron... | 01/12/1988 |
| 4713349 | Templet for simultaneous screening of several antibodies and method of using the same A templet (10) is provided having a lower plate (11) which receives a carrier sheet having antigens immobilized thereon as transferred from an electrophoresis gel. An upper plate (12) having a plurality of parallel channels (22) formed therein, is placed ... | 12/15/1987 |
| 4711106 | Locking device A locking device which may be used in locking two objects together, includes a stud having a threaded axial hole extending rearwardly from the forward end thereof and a keyed portion having at least one key, and a knob which locks over a forward portion o... | 12/08/1987 |
| 4710468 | Process for preparing L-carnitine and chemical intermediates employed therein A process for preparing L-carnitine which comprises exposing γ-substituted acetoacetic acid esters or amides to the fermentative enzymatic action of a microorganism which elaborates L-ଲ-hydroxyacyl CoA dehydrogenase [EC 1.1.1.35] , recovering the r... | 12/01/1987 |
| 4710181 | Variable diameter catheter The present invention provides a variable diameter catheter which is folded in a longitudinal manner in order to reduce the diameter for convenient and less traumatic insertion into a body orifice. The fold in the catheter is maintained by a slidably remo... | 12/01/1987 |
| 4710031 | Microtiter plate reader A microtiter plate reader is disclosed which allows visual examination of the contents of the wells of a microtiter plate having an array of wells. The microtiter plate reader includes supporting means for supporting the microtiter plate with the wells op... | 12/01/1987 |
