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| Patents for W. C. Hauff | |||||
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| Number | Date | Patentee | Title | Type | |
| 367,596 | Aug. 02, 1887 | J. Clark | Pipe Wrench | chain and strap wrenches | |
| 377,668 | Feb. 07, 1888 | J. Clark | Pipe Wrench | pipe wrenches | |
| 651,287 | Jun. 05, 1900 | W.H. Williams | Veneer-slicing machine | veneer machines | |
| 941,901 | Nov. 30, 1909 | E. Zinn | Tool Handle | tool handles | |
| 1,093,478 | Apr. 14, 1914 | J.H. Rusby | Extension-drill | hand drills | |