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| All Patents in class 475/331 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,290,962 | Dec. 13, 1966 | M.J. Reader, Executrix, J.T. Reader, deceased (Estate of), W.G. Muller, G.H. Jones, W.L. McCann | Planetary Transmission | metalworking power transmission | |
| 5,269,733 | Dec. 14, 1993 | P.M. Anthony | Power Tool Plastic Gear Train | ||