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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 3939260 | Therapeutic and cosmetic compositions Lyophilised oil-in-water emulsions and suspensions are useful as compositions for dermatological, cosmetological, buccal, and dental use having the advantage over conventional compositions of lower bulk and better storage stability.... | 02/17/1976 |
