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US Patent: 1,093,269
Jack
Patentee:
Isaiah E. Hindman (exact or similar names) - Crafton, PA

USPTO Classifications:
254/111, 74/152, 74/169

Tool Categories:

Assignees:
Duff Mfg. Co. - Pittsburgh, PA

Manufacturer:
Duff Mfg. Co. - Pittsburgh, PA

Witnesses:
H. M. Corwin
Jesse B. Heller

Patent Dates:
Applied: Nov. 07, 1912
Granted: Apr. 14, 1914

Patent Pictures: [ 1 | 2 | 3 ]
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Vintage Machinery entry for Duff Mfg. Co.
Description:
An example has been seen labeled, "THE DUFF MFG CO / PITTSBURGH / PA / NO 089 / 1916 MODEL / PAT APRIL 14 1914 / X-1490 / BARRETT".

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