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| All Patents in class 601/144 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,802,140 | Apr. 21, 1931 | J.G. De Remer | Portable massage machine | exercise and sports equipment | |
| 1,818,465 | Aug. 11, 1931 | J.G. De Remer | Massage apparatus | exercise and sports equipment | |
| 1,837,530 | Dec. 22, 1931 | J.D. Cole | Exerciser mechanism | exercise and sports equipment | |
| 1,837,531 | Dec. 22, 1931 | J.D. Cole | Exercising device | exercise and sports equipment | |
| 1,837,532 | Dec. 22, 1931 | J.D. Cole | Exerciser mechanism | exercise and sports equipment | |