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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 5472130 | Powered fastener inserting machine A powered machine for inserting an attachment member having a filament with a head at one end through an opening in an article and including a needle which is projected from machine in order to penetrate that article and convey the filament head therethro... | 12/05/1995 |
| 4880065 | Air motor operated rotary earth drilling tool A new and improved air motor operated rotary earth drilling tool for use with a source of high pressure, high volume compressed air has a circulation control housing, a motor housing, a reduction gear housing, and a bearing housing connected longitudinall... | 11/14/1989 |
| 4078728 | Combined coupling and air nozzle A main body is provided having a fluid passage extending therethrough including inlet and outlet ends. The body further defines a branch passage having an outlet end portion opening outwardly of the body and an inlet end portion opening into an intermedia... | 03/14/1978 |
