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| Patents for Hoefer Mfg. Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 506,865 | Oct. 17, 1893 | D.C. Stover, F.W. Hoefer, E.A. Hoefer, A. Hoefer | Sensitive drill | |
 | 542,694 | Jul. 16, 1895 | D.C. Stover, F.W. Hoefer | Sensitive drill press | |
 | 542,695 | Jul. 16, 1895 | F.W. Hoefer, D.C. Stover | Variable-speed sensitive drill press | |
 | 809,372 | Jan. 09, 1906 | E.A. Hoefer | Variable-speed gear | |
 | 1,164,813 | Dec. 21, 1915 | F.W. Hoefer, C.A. Hoefer | Multiple-spindle drill-head | |