| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 92/162R | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 427,044 | May 06, 1890 | A.B. Calkins | Steam Engine Indicator | steam engine indicators | |
| 2,403,427 | Jul. 02, 1946 | O.H. Ludeman | Valve Mechanism | steam valves | |