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| All Patents in class 81/401 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 144,253 | Nov. 04, 1873 | J.R. Brown | Pipe-Tongs | |
 | 145,929 | Dec. 30, 1873 | J.R. Brown | Pipe-Tongs | |
 | 167,085 | Aug. 24, 1875 | J.M. Evarts | Pipe-Tongs | |
 | 197,756 | Dec. 04, 1877 | E.D. Barrett | Pipe-Wrench or Tongs | |
 | 217,117 | Jul. 01, 1879 | W.B. Killough | Wrench | |
 | 372,080 | Oct. 25, 1887 | W.H. Mitchell | Combination Tool | |
 | 574,487 | Jan. 05, 1897 | H.J. Kapka | Wrench | |
 | 2,259,216 | Oct. 14, 1941 | H.W. Small | Wrench | |
 | 2,312,947 | Mar. 02, 1943 | A.A. Westman | Wrench | |
 | 2,320,303 | May 25, 1943 | C.O. Ross | Mechanic's Tool | |