| All Patents in class 81/177.2 |
Patents 16 -
30
of 51
      |
| Number | Date | Patentee | Title | Type |
| 614,255 | Nov. 15, 1898 | W.W. McChesney | Pipe Wrench | pipe wrenches |
| 643,522 | Feb. 13, 1900 | G. McKercher | Improvement in Pipe-Wrenches | quick adjust wrenches |
| 647,799 | Apr. 17, 1900 | J.L. Boyd | Combination tool | wrench combination tools |
| 732,858 | Jul. 07, 1903 | D.H. Irland | Wrench | pipe wrenches |
| 797,981 | Aug. 22, 1905 | W.O. Shobrook | Sliding Jaw Wrench | axle nut wrenches |
| 814,020 | Mar. 06, 1906 | H.A. Clifford | Convertible Tool Handle | screwdriver handles |
| 854,742 | May 28, 1907 | C.E. Hill | Adjustable extension bit holder | drill bit extensions |
| 873,977 | Dec. 17, 1907 | J.J. Albrecht | Ratchet Wrench | ratchet wrenches |
| 952,436 | Mar. 15, 1910 | C. Miller | Ratchet Wrench | ratchet wrenches |
| 1,018,172 | Feb. 20, 1912 | S.T. Downs | Service Box Key | |
| 1,030,592 | Jun. 25, 1912 | J.A. Leland | Telescopic Extension-Rod | drill bit extensions |
| 1,050,583 | Jan. 14, 1913 | W.A. Whitney | Ratchet Wrench | ratchet wrenches |
| 1,143,350 | Jun. 15, 1915 | L.D. Benedict | Pipe Wrench | pipe wrenches |
| 1,203,853 | Nov. 07, 1916 | C. Contal | Extensible Tool | wrench handle components |
| 1,305,249 | Jun. 03, 1919 | O.H. Buck | Attachment For Wrenches | wrench handle components |
