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

Quick search:	Patent number:	Patent Date:

US Patent: 511,924
Artesian-well apparatus
Patentee: Josiah Barrett (exact or similar names) - Allegheny, PA USPTO Classifications: 74/40, 74/68 Tool Categories: industrial machines : pumps : oil well pumps Assignees: None Manufacturer: Duff Mfg. Co., Ltd. - Allegheny, PA Witnesses: J. N. Cooke William J. Hartin	Patent Dates: Applied: Mar. 24, 1893 Granted: Jan. 02, 1894 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Duff Mfg. Co.
Description: Improvements to the inventor's earlier patent 495,689. Unlike most of this inventor's patents, it was not assigned to his employer, Duff Mfg. Co.

Copyright © 2002-2024 - DATAMP