Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 4209505 | Pilocarpine mouthwash for dry mouth relief A composition and method of using same for the treatment of patients suffering from a dry mouth condition, comprising from about 0.025 to about 1.0% by weight pilocarpine pilocarpine nitrate or pilocarpine hydrochloirde, in a sweetened mouthwash carrier. ... | 06/24/1980 |