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US Patent: 893,561
Drop Hammer
Patentee:
Arthur A. Ambler (exact or similar names) - Springfield, Clark County, OH

USPTO Classifications:
72/439, 72/456, 74/490

Tool Categories:
metalworking machines : forging machines : drop hammers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Nov. 28, 1904
Granted: Jul. 14, 1908

Patent Pictures:
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