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US Patent: 504,278
Combination Gage
Patentee: Charles W. Preston (exact or similar names) - San Francisco, San Francisco County, CA USPTO Classifications: 33/332, 33/342, 33/427 Tool Categories: layout tools : measurement gauges : surface gauges Assignees: William C. Espey - San Francisco, San Francisco County, CA Walter E. Anderson - San Francisco, San Francisco County, CA Manufacturer: Not known to have been produced Witnesses: Earl Duvall, Jr. Willain L. Boydeu Alfred Enquist Wilson D. Bent, Jr.	Patent Dates: Applied: Nov. 01, 1892 Granted: Aug. 29, 1893 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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