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| Patents for Charles Schroeder | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 463,836 | Nov. 24, 1891 | J. Hunzinger | Wood-carving machine | |
 | 484,984 | Oct. 25, 1892 | F. Wesel | Machine for cutting printers' rules and leads | |
 | 490,401 | Jan. 24, 1893 | H.A. Schneekloth | Punching, shearing, and forging machine | |
 | 496,123 | Apr. 25, 1893 | W.L. Keuffel | Zig Zag Rule | |
 | 512,780 | Jan. 16, 1894 | F. Wesel | Printer's proof-press | |
 | 521,265 | Jun. 12, 1894 | R. Haberthur | Combined Wrench and Pipe and Thread Cutter | |