Home| FAQ	Search:Advanced|Person|Company| Type|Class	Login

Quick search:	Patent number:	Patent Date:

US Patent: 473,486
Steam-engine valve
Patentee: Nelson W. Twiss (exact or similar names) - New Haven, CT USPTO Classifications: 137/637.3 Tool Categories: propulsion and energy : steam engines : steam engine valve gear transportation : railroads : railroad locomotives : steam engine valve gear Assignees: None Manufacturer: Nelson W. Twiss - New Haven, CT Witnesses: Andrew J. Hatch Leon F. Brower	Patent Dates: Applied: Jun. 27, 1891 Granted: Apr. 26, 1892 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Nelson W. Twiss
Description: Improvements to patent 212,285.

Copyright © 2002-2026 - DATAMP