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| Patents for George McKercher | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 474,300 | May 03, 1892 | G. McKercher | Pipe Wrench | |
 | 504,232 | Aug. 29, 1893 | G. McKercher | Wrench | |
 | 643,522 | Feb. 13, 1900 | G. McKercher | Improvement in Pipe-Wrenches | |
 | 729,504 | May 26, 1903 | G. McKercher | Wrench | |