| Patents for Ashton Valve Co. |
Patents 1 -
10
of 50
      |
| Picture | Number | Date | Patentee | Title |
| | 93,790 | Aug. 17, 1869 | P.C. Wortman | Improvement in Feed-Water Heaters |
| | 122,756 | Jan. 16, 1872 | W. Camerer | Improvement in safety-valves |
 | 123,546 | Feb. 13, 1872 | H.G. Ashton | Improvement in Lock Safety-Valves for Steam-Boilers |
 | CA-6,868 | Dec. 12, 1876 | H.G. Ashton | Perfectionnements aux Soupapes de Sûreté |
 | CA-6,874 | Dec. 12, 1876 | H.G. Ashton | Perfectionnements Aux Locomotives de Railroutes |
| | 186,783 | Jan. 30, 1877 | H.G. Ashton | Improvement in Safety-Valve Attachments to Utilize the Escape-Steam |
| | 197,072 | Nov. 13, 1877 | J.E. Maynadier, H.G. Ashton | Improvement in Safety-Valves |
| | 197,073 | Nov. 13, 1877 | H.G. Ashton | Improvement in Safety-Valve Attachments to Utilize the Escape Steam |
| | 200,119 | Feb. 12, 1878 | H.G. Ashton | Improvement in Safety-Valves |
| | 201,862 | Apr. 02, 1878 | H.G. Ashton | Improvement in Exhaust Mechanisms for Locomotives and Other Steam-Engines |
