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| All Patents in class 464/44 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 566,923 | Sep. 01, 1896 | W.J. Mewer | Chain Drill | |
| 788,810 | May 02, 1905 | A.A. Ambler | Safety-Clutch | ||
 | 804,778 | Nov. 14, 1905 | G.W. Smith | Yieldable Gear | |
| 900,122 | Oct. 06, 1908 | W.L. Procunier | Yielding Bit and Tap Chuck | ||
 | 1,002,310 | Sep. 05, 1911 | W.L. Procunier | Safety-chuck | |