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US Patent: 1,770,935
Eraser-cleaning machine
Patentee:
Emil Lochman (exact or similar names) - Milwaukee, WI

USPTO Classifications:
15/104.001, 15/183, 15/206, 15/311

Tool Categories:

Assignees:
Walter J. McMillan - Chicago, IL

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 06, 1927
Granted: Jul. 22, 1930

Patent Pictures:
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Description:
Inventor Lochman also patented a woodcarving machine.

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