Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Application No. | Application Title | Issue Date |
| 20110160494 | Trimethylolpropane color improvement The present invention provides a process for improving the color of trimethylolpropane which comprises the steps of a) supplying a crude, aqueous base solution of trimethylolpropane, containing color causing impurities, and having a pH of less than about 9; b) contactin... | 06/30/2011 |