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US Patent: 1,017,408
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Patentee:
Edward M. Graham - Chicago, IL

USPTO Classifications:
279/36

Tool Categories:

Assignees:
Vaughan & Bushnell Mfg. Co. - Chicago, IL

Manufacturer:
Not known to have been produced

Witnesses:
Frances M. Frost
Thomas A. Banning, Jr.

Patent Dates:
Applied: Jul. 24, 1911
Granted: Feb. 13, 1912

Patent Pictures:
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