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

Quick search:	Patent number:	Patent Date:

US Patent: 450,965
Elevator-valve controller
Patentee: Edwin S. Matthews (exact or similar names) - Cincinnati, OH USPTO Classifications: 187/311 Tool Categories: Assignees: Edwin S. Matthews - Cincinnati, OH James L. Haven - Cincinnati, OH Manufacturer: Not known to have been produced Witnesses: James H. Layman Samuel M. Quinn	Patent Dates: Applied: Nov. 10, 1890 Granted: Apr. 21, 1891 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for James L. Haven & Co.

Copyright © 2002-2024 - DATAMP