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Patents for Charles L. Dunham | |||||
Number | Date | Patentee | Title | Type | |
332,191 | Dec. 08, 1885 | C.L. Dunham | Pipe Wrench | chain and strap wrenches | |
404,781 | Jun. 04, 1889 | C.L. Dunham | Pipe Wrench | chain and strap wrenches | |
404,789 | Jun. 04, 1889 | C.L. Dunham | Pipe Wrench | chain and strap wrenches | |
542,012 | Jul. 02, 1895 | C.L. Dunham | Pipe Wrench | pipe wrenches | |
563,848 | Jul. 14, 1896 | C.L. Dunham | Sucker Rod Wrench | wrenches | |
632,555 | Sep. 05, 1899 | C.L. Dunham | Wrench For Well-Drilling Tools |