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US Patent: 1,054,413
Lifting-jack
Patentee: Isaiah E. Hindman (exact or similar names) - Crafton, PA USPTO Classifications: 254/103 Tool Categories: trade specific : vehicle repairer : vehicle mechanic Assignees: Duff Mfg. Co. - Pittsburgh, PA Manufacturer: Duff Mfg. Co. - Pittsburgh, PA Witnesses: George H. Parmelee H. M. Corwin	Patent Dates: Applied: May 24, 1912 Granted: Feb. 25, 1913 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Duff Mfg. Co.

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