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Patent number:
Patent Date:
US Patent: 1,393,501
Drop Hammer
Patentees:
Otis R. Clark (
exact
or
similar
names) - Schenectady, Schenectady County, NY
Charles H. Franklin (
exact
or
similar
names) - Schenectady, Schenectady County, NY
USPTO Classifications:
403/410
,
72/439
Tool Categories:
metalworking machines
:
forging machines
:
drop hammers
Assignees:
General Electric Co.
- Schenectady, Schenectady County, NY
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Jan. 31, 1919
Granted:
Oct. 11, 1921
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for General Electric Co.
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