| All Patents in class 81/93 |
Patents 1 -
15
of 23
      |
| Number | Date | Patentee | Title | Type |
| 94,085 | Aug. 24, 1869 | A.B. Davis | Improvement in Duplex Wrench | pipe and nut combination wrenches |
| 106,129 | Aug. 09, 1870 | A.B. Davis | Nut-Wrench | pipe and nut combination wrenches |
| 106,467 | Aug. 16, 1870 | S. Chapman | Wrench | pipe wrenches |
| 120,947 | Nov. 14, 1871 | A.B. Davis | Improvement in Duplex Wrenches | wrench jaw components |
| 145,085 | Dec. 02, 1873 | W.C. Bemis | Wrenches | pipe and nut combination wrenches |
| 160,946 | Mar. 16, 1875 | H. Otto | Pipe-Wrench | pipe wrenches |
| 220,076 | Sep. 30, 1879 | A. Jackson | Improved Universal Wrench | wrenches |
| 232,937 | Oct. 05, 1880 | G.A. Chapman | Pipe Cutter and Wrench | combination tools |
| 286,561 | Oct. 09, 1883 | H.M. Vincent, W.N. Smith | Wrench | wrench jaw components |
| 317,923 | May 12, 1885 | A. Call | Wrench | pipe and nut combination wrenches |
| 317,924 | May 12, 1885 | A. Call | Wrench | pipe and nut combination wrenches |
| 427,672 | May 13, 1890 | H.B. Cary | Monkey Wrench | wrench jaw components |
| 449,722 | Apr. 07, 1891 | A.C. Whittier | Wrench for Pipe-Work | screw adjust wrenches |
| 492,199 | Feb. 21, 1893 | H. Hammond | Pipe Tongs and Wrench | pipe tongs |
| 501,860 | Jul. 18, 1893 | W.S. Bemis | Combined Pipe and Monkey Wrench | pipe and nut combination wrenches |
