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US Patent: 1,288,788
Micrometer
Patentee:
Alfred Zimmermann (exact or similar names) - Zurich, Switzerland

USPTO Classifications:
33/817, 33/818

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed
Patent Dates:
Applied: Jul. 21, 1917
Granted: Dec. 24, 1918

Patent Pictures: [ 1 | 2 ]
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