| All Patents in class 82/172 |
Patents 1 -
10
of 24
      |
| Picture | Number | Date | Patentee | Title |
| | 49,203 | Aug. 01, 1865 | S. Wing | Water and Gas Fillings |
| | 144,524 | Nov. 11, 1873 | H. Essex | Machines for Dressing Metal Cocks |
| | 146,633 | Jan. 20, 1874 | W.W. Allmand | Machines for Refitting Valves |
| | 464,617 | Dec. 08, 1891 | P.J. Wright, C.H. Sampson | Valve Dressing Machine |
 | 560,481 | May 19, 1896 | F.E. Dexter | Machine for repairing valves and valve-seats |
| | 663,000 | Dec. 04, 1900 | M.A. Ackles | Valve Repairing Machine |
 | 836,487 | Nov. 20, 1906 | F.G. Crone | Valve Dresser |
 | 918,805 | Apr. 20, 1909 | T.B. Williams | Machine for reseating valves, &c. |
 | 926,957 | Jul. 06, 1909 | A.S. Noonan | Valve Truing Tool |
| | 956,918 | May 03, 1910 | T.B. Williams | Valve-reseating tool |
