Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 4021028 | Tiltable treatment table A tiltable treatment table in which the table member is pivotally mounted on an upstanding support frame through a suitable pivot structure which includes torsional counterbalance springs to counterbalance the weight of the patient and permit ready manual... | 05/03/1977 |
| 4008721 | Tape electrode for transmitting electrical signals through the skin A tape form electrode is provided which is usable for transmission of electrical signals into the human body through the skin. The electrode is of a construction so that it can be applied to the skin to secure good electrical contact therewith and remain ... | 02/22/1977 |
| 4004387 | Panels and the method of same for house construction An improved panel and method of making the panel for building construction in which fiberglass layers separated by insulation and having plastic reinforcing spaced intermediate the extent of the same provides the stud structure for the panels and the conn... | 01/25/1977 |
| 3995411 | Oscillating mounting support for agricultural instrument A four point mounting system for a header type implement mounted on a support vehicle or tractor in which the lower support or push arms are solid and of a greater length than of the upper arms which are telescopic and provided with knuckle joints or dual... | 12/07/1976 |
| 3995773 | Flexible liquid containing and dispensing device A flexible liquid container and dispensing device consisting of a flexible fluid containing pouch having mounted therein a rigid tubular member which is held in position by a sleeve member external thereof, the sleeve member being adapted to mount a pouri... | 12/07/1976 |
| 3994422 | Hand-held seed dispenser A manually operated hand-held seed dispenser for dispensing multiple seed charges in a spaced linear relationship. The seeder is adjustable to dispense seeds of varying size and seed charges of varied predetermined quantity.... | 11/30/1976 |
| 3989911 | Magnetic differential pressure switch A differential pressure switch incorporating a differential pressure sensor formed by a body having shaped chambers therein and an elastic diaphram moving a shaft mounting a magnet and coupled magnetically to magnetically operate controllers mounted outsi... | 11/02/1976 |
| 3986675 | Sand conditioner assembly A method and apparatus for mold sand conditioning which includes the directing of mold sand between bristles of counterrotating brushes where the bristles are intertwined and the sand is forced into the brushes to be finely divided and aerated upon discha... | 10/19/1976 |
| 3975688 | Television shut-off device An automatic shut-off device for television sets or equivalent apparatus receiving electromagnetic signals and transforming the same into audio or video signals. A shut-off device includes a detecting circuit which responds to the presence of a video or a... | 08/17/1976 |
| 3970479 | Electrochemical cell An electrochemical cell in which the sealing material between the electrodes of the cell is impervious to liquid but permeable to hydrogen gas. The improvement in the cell construction is a shortened path through the sealing material to permit a continual... | 07/20/1976 |
| 3965660 | Stack forming apparatus A stack forming apparatus comprising a chassis with a stack forming container thereon and a crop pick up means for directing harvested crop into the container. The stack forming container includes a pivoted roof having sloped forward and rearward sections... | 06/29/1976 |
| 3963335 | Magnetic tape carrier An audio visual reproduction apparatus utilizing an improved tape and film cartridge which is completely enclosed to be tamper-proof and to be used by inexperienced personnel. The cartridge includes transparent apertures therein for projecting light there... | 06/15/1976 |
| 3962803 | Dredging head A dredging apparatus having an improved dredging head in which the suction pump and drive motors for the same are mounted adjacent the clean-out and cutting augers for increased pumping efficiency. The augers include a cooperating plurality of cutting tee... | 06/15/1976 |
| 3951212 | Sod cutter A sod cutter having an annular body with a tapered, sharpened annular cutting edge, a support sleeve and a shaft journaled in the sleeve and projecting into the annular body. The shaft has a external handle thereon and the shaft is movable relative to the... | 04/20/1976 |
| 3943937 | Gas absorbing implantable electrical medical device An implantable electrically actuated medical device having gas storage characteristics in which the device includes one or more electrochemical cells and an operative electric circuitry mounted in a metallic container, all of which are positioned in a mou... | 03/16/1976 |
| 3938707 | Fluid containing and dispersing structure A fluid-containing and dispensing structure consisting of a flexible sealed fluid-containing pouch mounted within a container formed of a relatively rigid material compared with the pouch which is deformable. The container has associated therewith a pouri... | 02/17/1976 |
| 3934104 | Push-button switch A push-button electric switch particularly adapted for use in printed circuit boards in which the base member has a plurality of terminals thereon and the actuating plunger may incorporate one or more bridging contact members which cooperate with the term... | 01/20/1976 |
| 3934100 | Acoustic coupler for use with auditory equipment The disclosure is directed to an elongated and tapered, bulb-like hollow housing which is constructed and arranged to fit in the outer ear of the wearer having a plurality of openings formed therein circumferentially disposed to define rib portions which ... | 01/20/1976 |
| 3933247 | High speed magnetic core handler An orientation system forms part of a magnetic core handling system using an oscillating feed cup causing magnetic cores to roll across an arcuate surface into a tapered slot and communicate with an index feed wheel. The index feed wheel has 50 slots form... | 01/20/1976 |
| 3932666 | Treatment of trees for prevention and cure of wilt diseases A treatment for trees infected with fungus diseases producing characteristic wilt which comprises injecting a solution including as the active ingredient thereof a halogenated compound structurally similar to the lignin. Typical examples include halogenat... | 01/13/1976 |
