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US Patent: 191,133
Improvement in gages for bits
Patentee:
Rodolphus Gardiner - Olneyville, RI

USPTO Classifications:
408/202

Tool Categories:
gauges
specialty tools : gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. J. Cushing
J. F. Gardiner

Patent Dates:
Granted: May 22, 1877

Patent Pictures:
USPTO pdf tiff
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