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US Patent: 812,411
Gage Reading Device
Patentee:
George P. Doern (exact or similar names) - Chicago, Cook County, IL

USPTO Classifications:
33/722, 33/833

Tool Categories:
specialty tools : gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Nov. 21, 1904
Granted: Feb. 13, 1906

Patent Pictures:
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