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Patent number:
Patent Date:
US Patent: 477,159
Power Hammer
Patentees:
James B. Sweeney (
exact
or
similar
names) - St. Johnsbury, Caledonia County, VT
Robert B. Laird (
exact
or
similar
names) - St. Johnsbury, Caledonia County, VT
USPTO Classifications:
72/450
,
74/25
Tool Categories:
metalworking machines
:
forging machines
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
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Laird & Sweeney Mfg. Co.
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