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"The Americans have need of the telephone, but we do not. We have plenty of messenger boys."
Sir William Preece, chief engineer, British Post Office ; 1878
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| Number | Title | Issue Date |
| 4916953 | Device for measuring the movement of a motor vehicle A device for measuring the movement of a motor vehicle with a speedometer (11, 13) which produces a control signal when it is determined that the speed has exceeded a predetermined limit. A distance gauge (11, 15) is equipped with a release mechanism (14)... | 04/17/1990 |
| 4323093 | Multiple stage fluid pressure governor having two break points A flyweight governor valve assembly having a fluid pressure modulator valve element mounted within a valve chamber for axial movement, a first set of primary and secondary weights mounted on a valve sleeve that forms a part of the governor valve assembly,... | 04/06/1982 |
