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Patent number:
Patent Date:
US Patent: 78,291
Drop Hammer
Patentee:
Truman P. Keeler (
exact
or
similar
names) - Worcester, Worcester County, MA
USPTO Classifications:
72/438
,
72/444
,
74/55
,
74/567
Tool Categories:
metalworking machines
:
forging machines
:
drop hammers
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Granted:
May 26, 1868
Patent Pictures:
USPTO
(New site tip)
Google Patents
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