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| All Patents in class 464/102 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,769,107 | Jul. 01, 1930 | E.E. Brown | Flexible coupling | industrial machine shaft couplings | |
| 1,823,032 | Sep. 15, 1931 | G.A. De Vlieg | Tool Holder | drilling and boring tool holders | |