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US Patent: 1,911,857
Grinder speed control
Patentee:
Walter Stumpf (exact or similar names) - Towson Heights, MD

USPTO Classifications:
451/294, 451/915

Tool Categories:

Assignees:
Marschke Mfg. Co. - Towson, MD

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: May 08, 1929
Granted: May 30, 1933

Patent Pictures:
USPTO (New site tip)
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Report data errors or omissions to steward Jeff Joslin
Description:
Inventor Stumpf was deceased.

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