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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 7007874 | Shroud assembly for waste processing machine A shroud assembly for a waste processing machine includes a shroud for attachment to an engine of the waste processing machine. The shroud assembly also includes a plurality of fasteners for attaching the shroud to the engine of the waste processing machine, whereby... | 03/07/2006 |
| 6021826 | Powered cutting saw system A plate-joinery system includes a chain-saw plate joiner where the cutting mechanism includes a cutting-chain driven about a saw-bar. The cutting mechanism of the chain-saw plate joiner may be advanced on rails to one of a set of predetermined depths. The... | 02/08/2000 |
| 5413158 | Radial arm saw mortising adapter A simplified mortising adapter for converting a conventional radial arm saw, or other power tool having an arbor, into a mortising tool. The adapter includes a base plate and a drive spindle rotatably mounted to the base plate for connecting to the radial... | 05/09/1995 |
| 4470438 | Radial arm saw mortising adapter A mounting for use on a radial arm saw for use in cutting an accurate mortise. The chain saw is mounted on a bar adjustably attached to a plate which in turn has a bracket for clamping onto the housing of a motor of a radial arm saw. A drive for the chain... | 09/11/1984 |
