Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 4569497 | Meter leveling saddle A mounting for adjustably securing a meter to a pipe. The preferred embodiment of the mounting includes a one-piece, unitary saddle member, leveling member, and U-bolt which extends substantially about the pipe and is attached to the saddle member to secu... | 02/11/1986 |