Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 3946362 | Time division multiple transmission control apparatus A time division multiple transmission control apparatus which comprises a central processing device for generating a reference timing signal having a predetermined frequency and a time division multiple signal having substantially the same frequency for c... | 03/23/1976 |
| 3943305 | Telephone line control system Telephone line testing equipment in which a series of alternating current tone pulses are transmitted from the central office along the lines to a sensing means placed at a remote point in the circuit. The sensing means receives the coded tone pulse seque... | 03/09/1976 |
| 3940568 | Circuit arrangement for telephone exchange installations with central control means and a plurality of individual apparatuses having a common information communication line connecting the individual apparatus to the central control means A circuit arrangement for long distance telephone communication installations having a central apparatus comprising a central control unit and individual apparatus of different types; for example, internal connection sets, long distance line repeaters, ex... | 02/24/1976 |
