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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7310549 | Dive computer with heart rate monitor A dive computer that includes heart rate monitoring capability is provided. The heart rate monitoring is accomplished by a belt that fits around the diver's chest, and the information is wirelessly transmitted to the dive computer. The heart rate information may be ... | 12/18/2007 |
| 7065886 | Measurement and localization system using bases three and nine and corresponding applications A system for localizing a zone in space in relation to a predetermined point on a surface, wherein the surface is divided into nine zones of first rank obtained by dividing the surface into three parts in two different directions, a predetermined respective number f... | 06/27/2006 |
| 5717193 | Method and apparatus for determining the exponential powers of "i" The present invention provides methods and apparatus for readily determining the value of the imaginary number "i" raised to different exponential powers. Calculations pertaining to the imaginary "i" are commonly encountered in engineering, mathematical a... | 02/10/1998 |
| 5664334 | Inclination angle ruler This invention pertains to a new type of ruler for measuring the angle of inclination of a portion of terrain from a topographical map. Topographical maps contain precise information relating to elevation changes and distances. These two pieces of informa... | 09/09/1997 |
| 4994656 | Logic design slide rule A logic design slide rule comprises, in a preferred embodiment, front and rear cover plates coupled together; interior slide channels formed between the covers; and a plurality of slides disposed between the covers and able to move horizontally from left ... | 02/19/1991 |
| 4436990 | Counting device A cup counting device for use in open ended tubular dispensing devices, the device having a plurality of reverse scales extending towards the center of the device from the ends thereof, each scale being calibrated for a particular size and type of cup and... | 03/13/1984 |
| 4419572 | Check digit calculator There is provided a calculator for calculating check digits which are obtained from code numbers according to a modulus 10, modulus 11 or the like check. In accordance with one embodiment of the invention, the desired check digit original numerals are ind... | 12/06/1983 |
| 4410797 | Calculation table for family planning A calculation device for family planning, particulary for pre-planning the sex of a child. The device has a guide plate having a number of parallel guides arranged one above the other, and a cover plate which permits viewing of the guides. A number of sli... | 10/18/1983 |
| 4352978 | Analog balance A calculating device comprising a rockable cradle having a number of parallel grooves formed in its upper surface, each of which supports a beam provided on at least one of its faces with a calculating scale so that the beam has sliding movement within th... | 10/05/1982 |
| 4327500 | Computational aid device for Ekelund ranging A computational aid device for Ekelund range determinations comprising a e member adapted to be placed over a bearing/time plot and including two leg members to be aligned with intersecting bearing rate lines faired through the plot, and a range scale po... | 05/04/1982 |
| 4272674 | Check digit calculator A calculator for calculating check digits which are obtained from code numbers according to a modulus 10, modulus 11 or similar check. In accordance with one embodiment of the invention, the desired check digit original numerals are indicated in response ... | 06/09/1981 |
| 4108356 | Scheduling tool A scheduling tool for establishing estimated duration of a contractual obligation involving multiple phases and associated functions thereof is utilized with a normalized scale and various overlays determined in accordance with statistical information rel... | 08/22/1978 |
| 4056359 | Profile recognition apparatus for identifying bacteria A suspension of an unknown micro-organism is introduced into a plurality of reaction chambers, each containing a different specific biochemical reagent. The presence or absence of each reaction is subsequently transformed to a multi-digit numerical profil... | 11/01/1977 |
| 4037084 | Decompression plan calculator A decompression calculator for calculating safe and efficient diving schedules utilizing unequal time constants for uptake and elimination of inert gas in the diver's tissues. Scales are provided to calculate a safe decompression stop for a single stage d... | 07/19/1977 |
| 4006345 | Scheduling tool A scheduling tool for establishing estimated duration of a contractual obligation involving multiple phases and associated functions thereof is utilized with a normalized scale and various overlays determined in accordance with statistical information rel... | 02/01/1977 |
