Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 5067865 | Method and apparatus for feeding tabs or discs to an automatic staple or nail gun A method of feeding the discs to the automatic staple or nail gun includes the steps of providing a plurality of discs stacked atop one another, shuttling a first disc from the stack to a position normal to the staple or nail expulsion path, and retaining... | 11/26/1991 |
| 4957403 | Demountable pin for rotatably connecting together two elements of small axial dimension, particularly suitable for the lever mechanisms of textile machines A demountable pin for rotatably connecting together two elements of small axial dimension, consisting of a bolt with a frusto-conical under-head and an inner hexagonal through bore for tightening it by a key. The pin is locked between two frusto-conical f... | 09/18/1990 |
| 4589797 | Fixing member adapted to be clamped on a shaftlike element A fixing member in the form of a clamping disc having a radial opening, and being adapted to be clamped onto a shaft with the aid of a counter member having a coaxial opening is disclosed. Fastening means connect the disc and the counter member to one ano... | 05/20/1986 |