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US Patent: 570,767
Protractor
Patentee:
Walter W. Pennington (exact or similar names) - Butte, MT

USPTO Classifications:
33/403

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Elliot H. Wilson
Samuel Barker, Jr.

Patent Dates:
Granted: Nov. 03, 1896

Patent Pictures:
USPTO (New site tip)
Google Patents
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