| All Patents in class 451/117 |
Patents 1 -
10
of 64
      |
| Picture | Number | Date | Patentee | Title |
| | 286,095 | Oct. 02, 1883 | J.D. Waldran | Valve Grinder |
| | 571,572 | Nov. 17, 1896 | S.H. Lea | Tool for Reseating Faucets |
 | 918,049 | Apr. 13, 1909 | R.H. Hazeltine | Machine for Reseating Valves |
 | 918,050 | Apr. 13, 1909 | R.H. Hazeltine | Valve Grinding Device |
 | 930,472 | Aug. 10, 1909 | F.I. Harding | Valve Grinder |
 | 930,620 | Aug. 10, 1909 | J.R. Sandberg | Combined breast-drill and valve-grinder |
 | 942,222 | Dec. 07, 1909 | I.C. Smith | Valve Grinder |
 | 949,057 | Feb. 15, 1910 | H.W. Brown, G.H. Brown | Valve Reseating Device |
 | 956,822 | May 03, 1910 | M.F. Parsons | Grinding Tool |
 | 959,653 | May 31, 1910 | E.E. Townsend | Valve-seat grinder |
