Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 6439444 | Cantilever carrying apparatus A wheel-less carrying apparatus for use in conjunction with a self-propelled utility vehicle includes a frame that supports a removable load carrying body. The frame has a pair of spaced longitudinal beams and at least two lateral ribs secured to the long... | 08/27/2002 |