Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 6967378 | Semiconductor integrated circuit device configured to prevent the generation of a reverse current in a MOS transistor A semiconductor integrated circuit device has a MOS transistor M2 including a parasitic diode Dx2 for preventing a reverse current due to a parasitic diode Dx1 of a MOS transistor M1. The semiconductor integrated circuit device further ha... | 11/22/2005 |