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

Quick search:	Patent number:	Patent Date:

US Patent: 540,760
Automatic air and vacuum valve
Patentee: Sylvanus Sawyer (exact or similar names) - Fitchburg, MA USPTO Classifications: 137/186, 137/198, 137/202, 137/433, 137/493, 137/613, 237/68 Tool Categories: household : radiators Assignees: None Manufacturer: Not known to have been produced Witnesses: N. C. Lombard H. Theodore Fletcher	Patent Dates: Applied: Mar. 02, 1895 Granted: Jun. 11, 1895 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Sylvanus Sawyer

Copyright © 2002-2025 - DATAMP