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 |
| 4759062 | Arrangement for and method of protecting private security codes from unauthorized disclosure A private security code used for rendering microprocessor-based electronic equipment operational need not be selected or remembered by the user of the equipment. Instead, an authorized service center generates the private security code needed to re-enable... | 07/19/1988 |
| 4494114 | Security arrangement for and method of rendering microprocessor-controlled electronic equipment inoperative after occurrence of disabling event A lock-out security arrangement for and method of maintaining microprocessor-controlled electronic equipment normally operational until the occurrence of a disabling event, such as physical removal of the equipment from its normal installation, and/or ele... | 01/15/1985 |
