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US Patent: 1,911,574
Commutator Slotting Machine
Patentee:
John D. Karle - Rosselle Park, Union County, NJ

USPTO Classifications:
318/468, 318/761, 409/149, 409/198, 74/817

Tool Categories:
specialty machines : commutator slotting machines

Assignees:
Diehl Mfg. Co. - Elizabeth, Union County, NJ

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 18, 1931
Granted: May 30, 1933

Patent Pictures:
USPTO pdf tiff
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