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US Patent: 675,112
Pneumatic Hoisting Apparatus
Patentee: Robert A. Rutherford (exact or similar names) - Philadelphia, PA USPTO Classifications: 137/868, 188/67, 91/390, 91/398, 91/417R, 91/446, 91/457 Tool Categories: material handling : hoists, winches, come-alongs industrial tools : pneumatic tools Assignees: Pedrick & Ayer Co. - Philadelphia, PA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 09, 1900 Granted: May 28, 1901 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Pedrick & Ayer

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