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Patents for Colytt Laboratories | |||||
Number | Date | Patentee | Title | Type | |
1,081,700 | Dec. 16, 1913 | F.W. Riesenberg | Wrench | chain and strap wrenches | |
1,174,764 | Mar. 07, 1916 | F.R. Riesenberg | Wrench | chain and strap wrenches |