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Patents for Willard H. Griffin | |||||
Number | Date | Patentee | Title | Type | |
499,919 | Jun. 20, 1893 | E.P. Nichols, W.H. Griffin | Adjustable Wrench | socket wrenches | |
499,920 | Jun. 20, 1893 | E.P. Nichols, W.H. Griffin | Adjustable Wrench | brace wrenches |