| Patents for Henry George Ashton |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| CA-6,868 | Dec. 12, 1876 | H.G. Ashton | Perfectionnements aux Soupapes de Sûreté | steam safety valves |
| CA-6,874 | Dec. 12, 1876 | H.G. Ashton | Perfectionnements Aux Locomotives de Railroutes | steam safety valves |
| CA-11,789 | Sep. 20, 1880 | H.G. Ashton | Perfectionnements aux Soupapes de Sûreté | 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 |
