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US Patent: 517,208
Caliper Gage
Patentee:
Charles E. Billings - Hartford, CT

USPTO Classifications:
33/810

Tool Categories:
layout tools : measurement gauges

Assignees:
None

Manufacturer:
Billings & Spencer Co. - Hartford, Hartford County, CT

Witnesses:
John L. Edwards, Jr.
Fred J. Dole
E. H. Stocken

Patent Dates:
Applied: Nov. 03, 1893
Granted: Mar. 27, 1894

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Billings & Spencer Co.
Description:
F. H. Richards - patent attorney

Known examples of the tool are marked with the manufacturer and inventors name, as well as the patent date.

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