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Patent number:
Patent Date:
US Patent: 693,324
Power Hammer
Patentee:
Arthur W. Johnson (
exact
or
similar
names) - Chicago, Cook County, IL
USPTO Classifications:
72/450
,
74/44
Tool Categories:
metalworking machines
:
forging machines
:
power hammers
Assignees:
Leola A. Johnson
- Chicago, Cook County, IL
Manufacturer:
Not known to have been produced
Witnesses:
R. E. Smale
C. L. Redfield
Howard A. Redfield
Carlos Escobar
Patent Dates:
Applied:
Apr. 30, 1900
Granted:
Feb. 11, 1902
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
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