U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.

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Class 212/88 - Divided hoist-rope

Subclass of Class 212 - Traversing hoists
Definition: Linear cable hoists of the draft-rope, hoist-rope type,
No. of patents: 0