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| Patents for Fredrich W. Marschke | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,177,199 | Mar. 28, 1916 | W.A. Marschke, F.W. Marschke | Grinder | bench or pedestal grinders | |
| 1,372,033 | Mar. 22, 1921 | W.A. Marschke, F.W. Marschke | Grinder-hood | ||
| 1,403,179 | Jan. 10, 1922 | W.A. Marschke, F.W. Marschke | Stator | ||
| 1,800,307 | Apr. 14, 1931 | W.A. Marschke, F.W. Marschke | Swing grinder | ||