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US Patent: 2,560,850
Tactual Micrometer
Patentee:
Orville E. Day (exact or similar names) - Philadelphia, PA

USPTO Classifications:
33/813

Tool Categories:
metalworking tools : machinist tools : measuring tools : micrometers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed
Patent Dates:
Applied: Nov. 18, 1946
Granted: Jul. 17, 1951

Patent Pictures:
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Hyde W. Ballard - patent attorney

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