| Patents for J. E. Lonergan Co. |
Patents 1 -
15
of 33
      |
| Number | Date | Patentee | Title | Type |
| 132,477 | Oct. 22, 1872 | J.E. Lonergan | Improvement in lubricators | oil cups |
| RE9,164 | Apr. 20, 1880 | J.E. Lonergan | Lubricator | oil cups |
| 256,229 | Apr. 11, 1882 | J.E. Lonergan | Oil-cup for steam-engines | oil cups |
| 453,012 | May 26, 1891 | J.F. Lonergan | Cock or faucet | faucets |
| 453,013 | May 26, 1891 | J.F. Lonergan | Lubricator | oil cups |
| 455,001 | Jun. 30, 1891 | J.E. Lonergan | Testing-yoke for safety-valves | steam safety valves |
| 532,469 | Jan. 15, 1895 | J.E. Lonergan | Lubricator | oil cups |
| 944,330 | Dec. 28, 1909 | M.A. Hudson | Steam safety-valve | steam safety valves |
| 1,641,838 | Sep. 06, 1927 | H.J. Burkhardt | Pressure gauge | vacuum and pressure gauges |
| 2,414,794 | Jan. 28, 1947 | T.W. Bergquist | Safety valve | steam safety valves |
| CA-475,169 | Jul. 10, 1951 | T.W. Bergquist | Safety valves | steam safety valves |
| 2,597,057 | May 20, 1952 | T.W. Bergquist | Safety valve | steam safety valves |
| CA-507,209 | Nov. 09, 1954 | T.W. Bergquist | Safety valves | steam safety valves |
| 2,792,015 | May 14, 1957 | R.V. Smith | Liquid relief valve | pressure regulators |
| 2,815,040 | Dec. 03, 1957 | R.V. Smith | Pressure relief valve | steam safety valves |
