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US Patent: 1,400,166
Power Hammer
Patentee:
Eric Fritjof Karlson (exact or similar names) - Beaumont, Jefferson County, TX

USPTO Classifications:
72/438, 72/456

Tool Categories:
metalworking machines : forging machines : power hammers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: May 13, 1920
Granted: Dec. 13, 1921

Patent Pictures:
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