| All Patents in class 137/614.2 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 134,548 | Jan. 07, 1873 | J.C. Hoadley | Check-Valves | steam check valves |
| 197,072 | Nov. 13, 1877 | J.E. Maynadier, H.G. Ashton | Improvement in Safety-Valves | steam safety valves |
| 588,466 | Aug. 17, 1897 | A.G. Pace | Combustion Engine | internal combustion engines |
| 661,181 | Nov. 06, 1900 | J.W. Lambert | Speed-Regulator for Gas-Engines | internal combustion engine governors |
| 817,069 | Apr. 03, 1906 | L. Kaczander | Combined Stop and Check Valve | steam engine valves |
| 846,213 | Mar. 05, 1907 | L. Kassander | Boiler Check Valve | feedwater apparatus |
| 1,808,074 | Jun. 02, 1931 | W.P. Huffman, F.F. Rike | Valve | |
