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US Patent: 248,539
Safety attachment and governor for elevators
Patentee: Aretus A. Wilder (exact or similar names) - Detroit, MI USPTO Classifications: 187/346 Tool Categories: specialty machines : elevators and lifts material handling : industrial elevators and lifts Assignees: Aretus A. Wilder - Detroit, MI Corydon B. Palmer - Detroit, MI Manufacturer: Not known to have been produced Witnesses: William M. Porter Samuel E. Thomas	Patent Dates: Applied: Sep. 27, 1881 Granted: Oct. 18, 1881 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for A. A. Wilder

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