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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 7201522 | Printer cartridge A printer cartridge suitable for use in a cartridge-based printer houses and dispenses a roll of label media, and includes a housing having a top wall and a bottom wall. A yoke pivotally mounted between the top and bottom walls for pivotable movement about a pivot a... | 04/10/2007 |
| 6910819 | Printer cartridge A printer cartridge suitable for use in a cartridge-based printer houses and dispenses a roll of label media. The cartridge includes a housing having a top wall and a bottom wall. A yoke pivotally mounted between the top and bottom walls for pivotable movement about... | 06/28/2005 |
| 4451168 | Bottom line work piece holders A workpiece such as a paper or a card is held in proper position in a typewriter having a paper scale for typing to the bottom of the workpiece without side slippage by the inventive workpiece holders. Each of the pair of holders mounts fixably, detachabl... | 05/29/1984 |
| 4379645 | Large format paper handling assembly for typewriters or like business machines A large format paper handling assembly has an axially stationary platen which is rotatably mounted on pivotally mounted support arms. The platen is supported on spaced frame supported front guide rollers and rear feed rollers. The off axis rear feed rolle... | 04/12/1983 |
