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