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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 6789969 | Printer A printer retracts the platen and transportation rollers when a cover is opened while avoiding interference with parts inside the printer without hindering smooth opening and closing of the cover, increasing printer size, or requiring a large space around the printe... | 09/14/2004 |
| 6626594 | Printing machine with a latch for unlocking the cover The invention concerns a machine (1) for printing a substrate (5) taken from a supply (50), including a frame (2), a cover (3) movable relative to the frame, said frame (2) receiving the supply, and means (4) for printing the substrate (5) including in pa... | 09/30/2003 |
| 5302037 | Web handling and feeding system for printers A web feeding and handling system for feeding a two-ply web to a printer and winding one of the webs about a take-up spool and directing the remaining web into a cutter. The printer and web feed system are arranged in a housing having an access opening se... | 04/12/1994 |
| 4735521 | Drive apparatus for a printer mechanism A drive apparatus for a printer mechanism including a printhead comprises first and second print medium drive means for feeding first and second print mediums past the printhead, a main drive gear rotatable in a first direction for driving the first print... | 04/05/1988 |
| 4188138 | Switch means for journal paper feeding and receipt paper feeding control circuit The printer includes at least a receipt paper feeding and printing mechanism and a journal paper feeding and printing mechanism each operated in synchronism by a control circuit. A mechanical switching means is provided in either one of the receipt and jo... | 02/12/1980 |
