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Patents for Arthur W. Graham | |||||
Number | Date | Patentee | Title | Type | |
930,662 | Aug. 10, 1909 | A.W. Graham | Knurling tool for turret lathe | knurling tools | |
944,416 | Dec. 28, 1909 | A.W. Graham, F.N. Connet | Valve | industrial valves |