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| Patents for William Stahlschmidt | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 421,416 | Feb. 18, 1890 | J.H. Mickler | Drilling-machine | |
 | 421,417 | Feb. 18, 1890 | J.H. Mickler | Three Spindle Boring Machine | |
 | CA-37,190 | Aug. 22, 1891 | J.H. Mickler | Three-spindle boring machine | |
 | CA-37,191 | Aug. 22, 1891 | J.H. Mickler | Drilling machine | |