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| All Patents in class 474/257 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,671,048 | May 22, 1928 | P.B. Reeves | Belt fastener | industrial machine pulleys and belt drive mechanisms | |
| 1,761,155 | Jun. 03, 1930 | P.B. Reeves | Belt splice | industrial machine pulleys and belt drive mechanisms | |