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US Patent: 1,393,746
Calipers
Patentee:
John S. Bushnell (exact or similar names) - New York, NY

USPTO Classifications:
33/783, 33/802, D10/73

Tool Categories:
metalworking tools : machinist tools : measuring tools : indicating calipers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Feb. 13, 1920
Granted: Oct. 18, 1921

Patent Pictures:
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