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US Patent: 1,737,764
Combined Micrometer Caliper and Depth Gauge
Patentee:
Joseph H. Jacobs (exact or similar names) - Rochester, NY

USPTO Classifications:
33/709

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed
Patent Dates:
Applied: Nov. 05, 1928
Granted: Dec. 03, 1929

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

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