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| All Patents in class 16/204 | |||||
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| Number | Date | Patentee | Title | Type | |
| 247,987 | Oct. 04, 1881 | W.H. Brock | Chain Wrench | chain and strap wrenches | |
| 393,321 | Nov. 20, 1888 | N. McGillivary, D.A. Bailey | Wrench | chain and strap wrenches | |