| All Patents in class 81/300 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 69,563 | Oct. 08, 1867 | A. Herde | Instrument for Wrenching Bungs Out of Barrels | pliers type wrenches |
| 98,815 | Jan. 11, 1870 | G.E. Taylor | Roofing Tongs | special purpose gauges |
| 120,851 | Nov. 14, 1871 | O.W. Burritt | Improvement in tin-roofing machines | roofing machines |
| 122,308 | Jan. 02, 1872 | W.H. Downing | Improvement in Pipe Tongs | pipe tongs |
| 313,571 | Mar. 10, 1885 | J.C. Bauer | Spanner | pliers type wrenches |
| 343,422 | Jun. 08, 1886 | T.B. Beeson | Roofing-tongs | roofing tools |
| 407,466 | Jul. 23, 1889 | S.Y. Buckman | Roofing Double Seaming Machine | sheet metal |
| 458,934 | Sep. 01, 1891 | J.S. Barden | Pipe Wrench | pliers type wrenches |
| 740,739 | Oct. 06, 1903 | P. Broadbooks | Wire Working Tool | wire gripping tools |
| 751,352 | Feb. 02, 1904 | R.L. Sehon | Wire Clamp | |
| 985,277 | Feb. 28, 1911 | N. Nielsen | Wrench | pipe wrenches |
| 1,227,183 | May 22, 1917 | J.L. Needham | Jar Wrench | jar wrenches |
