| All Patents in class 81/70 |
Patents 31 -
45
of 64
      |
| Number | Date | Patentee | Title | Type |
| 769,054 | Aug. 30, 1904 | G.W. Bufford | Chain Wrench | chain and strap wrenches |
| 773,773 | Nov. 01, 1904 | H.C. Chase, G. Amborn | Chain Pipe-Wrench | chain and strap wrenches |
| 818,371 | Apr. 17, 1906 | S.N. Hall | Wrench | chain and strap wrenches |
| 876,925 | Jan. 21, 1908 | G. Amborn | Chain Pipe Wrench | chain and strap wrenches |
| 876,926 | Jan. 21, 1908 | G. Amborn | Chain Pipe Wrench | chain and strap wrenches |
| 876,927 | Jan. 21, 1908 | G. Amborn | Chain Pipe Wrench | chain and strap wrenches |
| 881,216 | Mar. 10, 1908 | G. Amborn | Chain Pipe Wrench | chain and strap wrenches |
| 889,244 | Jun. 02, 1908 | S.N. Hall, M.E. Lane | Wrench | chain and strap wrenches |
| 889,245 | Jun. 02, 1908 | S.N. Hall, M.E. Layne | Wrench | chain and strap wrenches |
| 889,246 | Jun. 02, 1908 | S.N. Hall, M.E. Layne | Wrench | chain and strap wrenches |
| 892,111 | Jun. 30, 1908 | G. Amborn | Chain Pipe Wrench | chain and strap wrenches |
| 892,112 | Jun. 30, 1908 | G. Amborn | Chain Pipe Wrench | chain and strap wrenches |
| 892,113 | Jun. 30, 1908 | G. Amborn | Chain Pipe Wrench | chain and strap wrenches |
| 900,861 | Oct. 13, 1908 | S.N. Hall, M.E. Layne | Wrench | chain and strap wrenches |
| 904,397 | Nov. 17, 1908 | G. Amborn | Chain Pipe Wrench | chain and strap wrenches |
