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| Patents for Woodstock Safety Chuck Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | CA-124,683 | Mar. 29, 1910 | W.L. Procunier | Yielding bit and tap chuck | |
 | 1,002,310 | Sep. 05, 1911 | W.L. Procunier | Safety-chuck | |