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US Patent: 890,757
Automatic Oil Check for Lubricator Drain Passages
Patentee: William E. Bryant (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 184/49 Tool Categories: industrial tools : lubricators Assignees: Michigan Lubricator Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 01, 1907 Granted: Jun. 16, 1908 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Michigan Lubricator Co.

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