| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 137/428 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 141,302 | Jul. 29, 1873 | C.J. Weld | Improvement in water-regulators for boilers | stationary boilers | |
| 666,156 | Jan. 15, 1901 | E.B. Ridgway | Steam hydraulic elevator | elevators and lifts | |
| 1,464,669 | Aug. 14, 1923 | G.W. Stetson | Water regulator | ||
| 2,592,913 | Apr. 15, 1952 | M.E. Landon, Administratrix, W.S. Landon, deceased (Estate of) | Liquid Level Control Means | liquid level controls | |
| 3,015,371 | Jan. 02, 1962 | E.C. Gits | Level Regulator | industrial machine lubrication | |