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US Patent: 517,208
Caliper Gage
Patentee: Charles E. Billings (exact or similar names) - 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 (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "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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