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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 4019660 | Instant coffee dispenser A device for dispensing a pre-measured amount of a particulate solid such as instant coffee utilizing a rotatable hollow cylinder having an opening in the side wall extending radially for between 45° and 135° along a portion of the cylinder. The cylinde... | 04/26/1977 |
