Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 477,159
Power Hammer
Patentees:
James B. Sweeney - St. Johnsbury, Caledonia County, VT
Robert B. Laird - St. Johnsbury, Caledonia County, VT

USPTO Classifications:
72/450, 74/25

Tool Categories:
metalworking machines : forging machinery
trade specific : blacksmith

Assignees:
None

Manufacturer:
Laird & Sweeney Mfg. Co. - St. Johnsbury, Caledonia County, VT

Witnesses:
Frank Stafford
Wendell P. Stafford
Charles Nider
C. Sedgwick

Patent Dates:
Applied: Jul. 21, 1891
Granted: Jun. 14, 1892

Patent Pictures:
USPTO pdf tiff
Google Patents
Report data errors or omissions
"Vintage Machinery" entry for Laird & Sweeney Mfg. Co.

Copyright © 2002-2017 - DATAMP