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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 6533010 | Air regulating system for wheels An air pressure regulating system mounted within a wheel and tire assembly. It primarily includes a temperature sensor and a compressor assembly having a compression chamber and valves. Utilizing centrifugal forces from the rotation of a wheel and tire as... | 03/18/2003 |
| 6397404 | Toilet flushing system A toilet flushing system primarily having an actuating assembly, guide housing, funnel assembly and flexible hose. Designed to minimize water utilization, the water inlet is located above the water line in a natural state. With the ability to select the d... | 06/04/2002 |
