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| All Patents in class 464/55 | |||||
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| Number | Date | Patentee | Title | Type | |
| 803,006 | Oct. 31, 1905 | J.B. Merriam | Flexible Coupling | industrial machine shaft couplings | |
| 1,069,454 | Aug. 05, 1913 | J.B. Meriam | Flexible Coupling | industrial machine shaft couplings | |
| 1,681,793 | Aug. 21, 1928 | A.P. Steiner | Flexible coupling | industrial machine shaft couplings | |