| Patents for Ashton Valve Co. |
Patents 16 -
30
of 50
      |
| Number | Date | Patentee | Title | Type |
| GB-188,003,849 | Sep. 22, 1880 | H.G. Ashton | Improvements on Safety Valves | steam safety valves |
| DE-13,446 | Oct. 03, 1880 | H.G. Ashton | Innovations in safety valves for steam boilers | steam safety valves |
| CA-13,718 | Nov. 19, 1881 | H.G. Ashton | Perfectionnements aux Soupapes de Sûreté | steam safety valves |
| CA-13,719 | Nov. 19, 1881 | H.G. Ashton | Perfectionnements aux Soupapes de Sûreté | steam safety valves |
| 291,126 | Jan. 01, 1884 | H.G. Ashton | Safety-Valve | steam safety valves |
| 299,503 | Jun. 03, 1884 | H.G. Ashton | Safety Valves | steam safety valves |
| 301,079 | Jul. 01, 1884 | H.G. Ashton | Safety-Valve | steam safety valves |
| 303,252 | Aug. 12, 1884 | H.G. Ashton | Safety Valves | steam safety valves |
| 306,208 | Oct. 07, 1884 | R. Gould, H.G. Ashton | Safety Valves | steam safety valves |
| 395,536 | Jan. 01, 1889 | H.G. Ashton | Safety-valve | steam safety valves |
| 536,693 | Apr. 02, 1895 | R. Gould | Safety-valve | steam safety valves |
| 664,805 | Dec. 25, 1900 | C.B. Bosworth | Pressure-gage-testing apparatus | |
| 664,806 | Dec. 25, 1900 | C.B. Bosworth | Testing apparatus for pressure-gages | |
| 716,864 | Dec. 30, 1902 | A.E. Cutler, F.A. Casey | Safety Valve | steam safety valves |
| CA-84,776 | Jan. 12, 1904 | A.E. Cutler, F.A. Casey | Soupape de Sûreté | steam safety valves |
