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

Quick search:	Patent number:	Patent Date:

US Patent: 150,840
Treadles
Patentees: Edward Duffy (exact or similar names) - Oakland, Alameda County, CA Robert Swarbrick (exact or similar names) - Oakland, Alameda County, CA USPTO Classifications: 74/136 Tool Categories: propulsion and energy : human powered apparatus Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 04, 1874 Granted: May 12, 1874 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

Copyright © 2002-2025 - DATAMP