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US Patent: 1,668,248
Micrometer Attachment
Patentee:
Robert W. Olson (exact or similar names) - Beloit, WI

USPTO Classifications:
33/828

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed
Patent Dates:
Applied: Sep. 13, 1926
Granted: May 01, 1928

Patent Pictures:
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Description:
Clarence A. O'Brien - patent attorney

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