| All Patents in class 81/176.2 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 412,024 | Oct. 01, 1889 | T.S. Disston | Improvement in Wrenches For Inserting Saw Teeth | wrenches |
| 466,232 | Dec. 29, 1891 | P.G. Metzler, E. Harper | Flange Wrench | flange wrenches |
| 542,922 | Jul. 16, 1895 | W.H. Brock | Flange Wrench | flange wrenches |
| 760,532 | May 24, 1904 | A.J. Gerhardt | Wrench For Meat Choppers | auxiliary wrenches |
| 790,853 | May 23, 1905 | J.F. Reddy | Flange Wrench | flange wrenches |
| 898,657 | Sep. 15, 1908 | P.L. Kimball | Wrench | wrenches |
| 970,371 | Sep. 13, 1910 | U.C. Greggs | Wrench | wrench jaw components |
| 983,562 | Feb. 07, 1911 | M. Murray | Pipe Flange Wrench | ratchet wrenches |
| 2,086,722 | Jul. 13, 1937 | C.J. Matuella | Valve Turning Tool | valve turning tools |
