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 |
| 5028176 | Glass drilling machine with cooling fluid back pressure control system A glass drilling machine for drilling holes in a sheet of glass in which each hole is partly drilled from one side of the sheet and is then finish drilled from the opposite side. The machine is made up of aligned first and second drilling devices which ar... | 07/02/1991 |
