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| Patents for Bartz, Wygant & Brown Co., Inc. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 874,924 | Dec. 31, 1907 | F. Bartz, F.A. Wygant | Receptacle for coffee-mills | |
 | 874,925 | Dec. 31, 1907 | F. Bartz, F.A. Wygant | Coffee-mill | |