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US Patent: 641,173
Micrometer Calipers
Patentee:
John P. B. Wells (exact or similar names) - Athol, MA

USPTO Classifications:
33/817

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Robert Everett
F. B. Keefer
Edgar V. Wilson
William G. Lord

Patent Dates:
Applied: Mar. 24, 1899
Granted: Jan. 09, 1900

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
Description:
James L. Norris - patent attorney

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