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US Patent: 310,681
Mechanisn for Operating Fan Blowers
Patentees: John G. Hoffman (exact or similar names) - New York, NY George Weber (exact or similar names) - Brooklyn, NY USPTO Classifications: 74/133 Tool Categories: trade specific : blacksmith Assignees: J. G. Hoffman Mfg Co. - Brooklyn, NY Manufacturer: Not known to have been produced Witnesses: C. Hall C. E. Sungren Louis M. F. Whitehead Fred Haynes	Patent Dates: Applied: May 22, 1884 Granted: Jan. 13, 1885 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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