Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login |
Quick search: |
All Patents in class 91/257 | |||||
Number | Date | Patentee | Title | Type | |
23,737 | Apr. 19, 1859 | D.A. Woodbury | Variable cut-off gear for steam-engines | steam engines | |
69,232 | Sep. 24, 1867 | J. McConnell | Rotary Steam Valve | steam engine valves | |
449,504 | Mar. 31, 1891 | J.E. Waterous | Valve for steam-engines | steam engine valve gear |