| All Patents in class 81/177.2 |
Patents 31 -
45
of 51
      |
| Number | Date | Patentee | Title | Type |
| 1,354,782 | Oct. 05, 1920 | G.F. Schlote | Wrench | |
| 1,370,194 | Mar. 01, 1921 | A.M. Cunha | Wrench | wrench handle components |
| 1,417,683 | May 30, 1922 | W.J. Parsons | Telescopic wrench | wrenches |
| 1,502,528 | Jul. 22, 1924 | L. Reulbach | Extensible Tool Holder | drilling and boring tool holders |
| 1,511,738 | Oct. 14, 1924 | F.W. Lownsbery | Extension Handle For Wrenches And Other Tools | wrench handle components |
| 1,578,065 | Mar. 23, 1926 | F.T. Coffin, E.F. Bickford, T.A. Bemus | Wrench Set | socket wrenches |
| 1,651,361 | Dec. 06, 1927 | J.R. Ayotte | Interchangeable Wrench or Other Tool Holder | |
| 1,676,370 | Jul. 10, 1928 | W.J. Victory | Speed Handle Wrench Extension | brace wrenches |
| 2,241,965 | May 13, 1941 | N.P. Sjobring | Grip for Hand Tools | |
| 2,282,148 | May 05, 1942 | S. Mandl | Tool Handle | wrench handle components |
| 2,520,652 | Aug. 29, 1950 | S. Mandl, E.M. Pfauser | Adjustable Tool Handle | wrench handle components |
| 2,620,001 | Dec. 02, 1952 | P.W. Sandrock, G.C. Fratz | Tool Handle | tool handles |
| 2,672,066 | Mar. 16, 1954 | G.C. Fratz, P.W. Sandrock | Tool Handle Attachment | |
| 2,691,316 | Oct. 12, 1954 | A.J. Brame | Box Ratchet Wrench | ratchet wrenches |
| 2,821,403 | Jan. 28, 1958 | B.J. Bevan | Tool Holder | tool holders |
