| All Patents in class 137/542 |
Patents 1 -
14
of 14
      |
| Number | Date | Patentee | Title | Type |
| 7,886 | Jan. 07, 1851 | W. Maguire | Machine for jointing staves | barrel making machines |
| 200,119 | Feb. 12, 1878 | H.G. Ashton | Improvement in Safety-Valves | steam safety valves |
| 206,589 | Jul. 30, 1878 | F. Lunkenheimer | Safety-Valve | steam safety valves |
| 290,450 | Dec. 18, 1883 | C. Ahrens | Safety-valve | steam safety valves |
| 303,252 | Aug. 12, 1884 | H.G. Ashton | Safety Valves | steam safety valves |
| 395,536 | Jan. 01, 1889 | H.G. Ashton | Safety-valve | steam safety valves |
| 545,502 | Sep. 03, 1895 | H.H. Nennegin | Gas Engine | gas and gasoline engines |
| 632,762 | Sep. 12, 1899 | H. Smith | Gas Engine | gas and gasoline engines |
| 920,472 | May 04, 1909 | W.E. Jerauld | Testing Attachment for Spring Loaded Valves | testing machines |
| 1,020,921 | Mar. 19, 1912 | E.F. Miller | Safety Valve | steam safety valves |
| 1,101,121 | Jun. 23, 1914 | J.J. Cook | Safety Valve | steam safety valves |
| 1,356,854 | Oct. 26, 1920 | G.H. Clark | Safety Valve | steam safety valves |
| 1,380,094 | May 31, 1921 | G.H. Clark | Safety Valve | steam safety valves |
| 2,101,682 | Dec. 07, 1937 | E. Klafstad | Relief Valve | steam safety valves |
