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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 4800827 | Apparatus and improved method for dispensing matter into the ground An improved apparatus for dispensing matter into the ground having a rod, and a body conduit terminating at one end into a funnel and terminating at another end into a body aperture. The rod is slidably disposed within the body aperture and the body condu... | 01/31/1989 |
