| Patents for John M. Hargrave |
Patents 1 -
10
of 16
      |
| Picture | Number | Date | Patentee | Title |
 | 1,161,210 | Nov. 23, 1915 | J.M. Hargrave | Work-holding jaw |
 | 1,201,461 | Oct. 17, 1916 | J.M. Hargrave | Work-holding clamp |
 | 1,456,692 | May 29, 1923 | J.M. Hargrave | Ratchet hand tool |
 | 1,580,197 | Apr. 13, 1926 | J.M. Hargrave | Clamp |
 | CA-268,829 | Mar. 08, 1927 | J.M. Hargrave | Clamp |
 | 1,638,848 | Aug. 16, 1927 | J.M. Hargrave | Clamp |
 | 1,639,561 | Aug. 16, 1927 | J.M. Hargrave, D.L. Farmer | Clamp |
 | 1,708,617 | Apr. 09, 1929 | J.M. Hargrave | Clamp jaw |
 | 1,881,535 | Oct. 11, 1932 | J.M. Hargrave | Rock drill bit |
 | 1,918,469 | Jul. 18, 1933 | J.M. Hargrave | Clamp and method of manufacturing the same |
