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| Patents for Joseph M. Stryhal | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 781,947 | Feb. 07, 1905 | J.M. Stryhal, J.J. Hartley | Center Punch | |
 | 1,206,164 | Nov. 28, 1916 | J.M. Stryhal | Valve Grinding Tool | |