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 |
| 4555174 | Magnetically attractable developer material transport apparatus Apparatus for conveying magnetically attractable particles from a first position to a second position including a support member, such as a disc, adapted for rotation and having at least one surface area at which a magnetic field is presented that passes ... | 11/26/1985 |
| 4428322 | Indicator mechanism in a pushbutton tuner An indicator mechanism in a pushbutton tuner characterized in that there is provided a front plate horizontally extending from the top end of the tuner casing. The front plate is integrally formed with two-stepped protrusions, the lower one of which is in... | 01/31/1984 |
| 4184447 | Tuning apparatus Tuning apparatus including a scale provided with indicia corresponding to different broadcast frequencies to which the tuning apparatus is tunable and a pointer movable across the scale to indicate the particular broadcast frequency to which the tuning ap... | 01/22/1980 |
