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US Patent: 1,054,413
Lifting-jack
Patentee:
Isaiah E. Hindman - Crafton, PA

USPTO Classifications:
254/103

Tool Categories:
trade specific : automobile mechanic

Assignees:
Duff Manufacturing Co. - Pittsburgh, PA

Manufacturer:
Duff Manufacturing Co. - Pittsburgh, PA

Witnesses:
George H. Parmelee
H. M. Corwin

Patent Dates:
Applied: May 24, 1912
Granted: Feb. 25, 1913

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Duff Manufacturing Co.

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