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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 5681475 | Water purification composition, kit and method employing the same A composition, in unit dosage form, for the batchwise purification for drinking purposes of a relatively small predetermined volume of contaminated water includes: (a) an organo-chlorine compound serving as a disinfectant-sanitizing agent; (b) a solid ino... | 10/28/1997 |
| 5611329 | Flameless heater and method of making same A flameless heater includes two non-woven polyester sheets which are thermally bonded together to form a number of pockets. Each pocket is filled with a powder mixture of Mg--Fe alloy, NaCl, antifoaming agents, and an inert filler. The outer surfaces of t... | 03/18/1997 |
