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US Patent: 657,924
Lubricator
Patentee: George B. Essex (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 184/52 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: Dec. 31, 1897 Granted: Sep. 18, 1900 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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