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US Patent: 1,370,310
Micrometer Caliper Attachment
Patentee:
Frank A. Gustavson (exact or similar names) - Seekonk, Bristol County, MA

USPTO Classifications:
33/828

Tool Categories:
metalworking tools : machinist tools : measuring tools : micrometer attachments

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Nov. 10, 1917
Granted: Mar. 01, 1921

Patent Pictures:
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