Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 5023962 | Bedside commode station for invalid patients A bedside commode station includes a bedside commode (10) and a handrail device (36), each of which is securely fastened to a common platform (54). The commode comprises a frame (25) which supports a waste container (26). The commode and the handrail are ... | 06/18/1991 |