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Patents for Charles Witteck | |||||
Number | Date | Patentee | Title | Type | |
134,581 | Jan. 07, 1873 | C. Witteck, B.D. Beiderhase | Devices for Producing Pearl Finish on Metallic Surfaces | polishing and buffing machinery | |
134,582 | Jan. 07, 1873 | C. Witteck, B.D. Beiderhase | Devices for Producing Satin Finish on Metallic Surfaces | polishing and buffing machinery |