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

Quick search:	Patent number:	Patent Date:

US Patent: 30,603
Pump
Patentee: Benjamin Douglas (exact or similar names) - Middletown, CT USPTO Classifications: 417/544 Tool Categories: household : water and plumbing : household hand pumps Assignees: W. & B. Douglas - Middletown, CT Manufacturer: W. & B. Douglas - Middletown, CT Witnesses: Edward F. Brown L. D. Gale	Patent Dates: Granted: Nov. 06, 1860 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for W. & B. Douglas
Description: Improvements to the check valve to improve water flow out the horizontal discharge pipe.

Copyright © 2002-2024 - DATAMP