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

Quick search:	Patent number:	Patent Date:

US Patent: 511,923
Jack
Patentee: Josiah Barrett (exact or similar names) - Allegheny, PA USPTO Classifications: 254/110, 74/155, 74/159, 74/169 Tool Categories: metalworking tools : lifting jacks Assignees: Duff Mfg. Co., Ltd. - Allegheny, PA Manufacturer: Duff Mfg. Co., Ltd. - Allegheny, PA Witnesses: J. N. Cooke D. L. Dorsey	Patent Dates: Applied: Mar. 03, 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 patents 312,316 and 455,993.

Copyright © 2002-2024 - DATAMP