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US Patent: 1,921,899
Micrometer Caliper Attachment
Patentee:
Carl H. Webbeking (exact or similar names) - Waterloo, IA

USPTO Classifications:
33/199R, 33/829

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed
Patent Dates:
Applied: Jan. 15, 1932
Granted: Aug. 08, 1933

Patent Pictures:
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