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US Patent: 646,458
Pneumatic Hoisting Apparatus
Patentee: Howard A. Pedrick (exact or similar names) - Philadelphia, PA USPTO Classifications: 212/34, 91/390, 91/404, 91/417R, 91/446, 91/450 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: Apr. 24, 1899 Granted: Apr. 03, 1900 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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