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Patents for Richd. K. Evans | |||||
Number | Date | Patentee | Title | Type | |
RE7,464 | Jan. 16, 1877 | G.F. Simonds | Improvement in Tempering and Forming Article of Steel | tool making machines | |
RE7,465 | Jan. 16, 1877 | G.F. Simonds | Improvement in Tempering and Forming Article of Steel | tool making machines |