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Patents for William J. Macak | |||||
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Picture | Number | Date | Patentee | Title | |
1,082,283 | Dec. 23, 1913 | W.J. Macak, H.W. Oster | Die-stock | ||
![]() | 1,116,838 | Nov. 10, 1914 | W.J. Macak, H.W. Oster | Die-stock |