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US Patent: 527,581
Micrometer Scale
Patentee:
John D. Benson (exact or similar names) - Brooklyn, NY

USPTO Classifications:
33/562

Tool Categories:
layout tools : measurement gauges
rules

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. B. Washburn
Leonard N. Vaughan
A. J. Tanner
M. L. Hirchchiffe
Patent Dates:
Applied: Dec. 27, 1892
Granted: Oct. 16, 1894

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
Description:
George D. Phillips - patent attorney

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