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US Patent: 1,997,917
Gauge
Patentees: Philip S. Russel (exact or similar names) - Detroit, Wayne County, MI Adolf Von Wangenheim (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 66/96R, 73/729.1 Tool Categories: specialty tools : gauges gauges : liquid gauges Assignees: Detroit Lubricator Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 09, 1930 Granted: Apr. 16, 1935 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Detroit Lubricator Co.

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