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Patent number:
Patent Date:
US Patent: 534,008
Drop Hammer
Patentee:
Francis A. Pratt (
exact
or
similar
names) - Hartford, Hartford County, CT
USPTO Classifications:
72/439
,
74/397
Tool Categories:
metalworking machines
:
forging machines
:
drop hammers
Assignees:
Pratt & Whitney Co.
- Hartford, Hartford County, CT
Manufacturer:
Pratt & Whitney Co.
- Hartford, Hartford County, CT
Witnesses:
Unknown
Patent Dates:
Applied:
Mar. 17, 1894
Granted:
Feb. 12, 1895
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Pratt, Whitney & Co.
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