| All Patents in class 137/542 |
Patents 1 -
10
of 15
      |
| Picture | Number | Date | Patentee | Title |
 | 7,886 | Jan. 07, 1851 | W. Maguire | Machine for jointing staves |
| | 200,119 | Feb. 12, 1878 | H.G. Ashton | Improvement in Safety-Valves |
| | 206,589 | Jul. 30, 1878 | F. Lunkenheimer | Safety-Valve |
 | 290,450 | Dec. 18, 1883 | C. Ahrens | Safety-valve |
| | 303,252 | Aug. 12, 1884 | H.G. Ashton | Safety Valves |
| | 395,536 | Jan. 01, 1889 | H.G. Ashton | Safety-valve |
| | 545,502 | Sep. 03, 1895 | H.H. Nennegin | Gas Engine |
| | 632,762 | Sep. 12, 1899 | H. Smith | Gas Engine |
| | 920,472 | May 04, 1909 | W.E. Jerauld | Testing Attachment for Spring Loaded Valves |
| | 1,020,921 | Mar. 19, 1912 | E.F. Miller | Safety Valve |
