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

Quick search:	Patent number:	Patent Date:

US Patent: 503,975
Hydraulic valve-gear
Patentee: Edwin S. Matthews (exact or similar names) - Cincinnati, OH USPTO Classifications: 137/625.66, 91/172, 91/186, 91/417R, 92/136 Tool Categories: Assignees: Edwin S. Matthews - Cincinnati, OH James L. Haven - Cincinnati, OH Manufacturer: Not known to have been produced Witnesses: Samuel D. Fitton, Jr. James W. See	Patent Dates: Applied: Jul. 18, 1892 Granted: Aug. 29, 1893 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.
Description: This hydraulic valve-gear is intended for elevators.

Copyright © 2002-2024 - DATAMP