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US Patent: 1,234,334
Brake mechanism for lifting-jacks
Patentee: Isaiah E. Hindman (exact or similar names) - Bellevue, PA USPTO Classifications: 188/187, 188/75, 254/103 Tool Categories: trade specific : vehicle repairer : vehicle mechanic Assignees: Duff Mfg. Co. - Pittsburgh, PA Manufacturer: Duff Mfg. Co. - Pittsburgh, PA Witnesses: Unknown	Patent Dates: Applied: Mar. 02, 1917 Granted: Jul. 24, 1917 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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