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US Patent: 1,816,548
Simplified Rule (Fractional markings to 64's)
Patentee:
Louis Robidoux - Flint, MI

USPTO Classifications:
33/494

Tool Categories:

Assignees:
Theresa Robidoux - Providence County, RI

Manufacturer:
Simplified Rule Co. - Providence County, RI

Witnesses:
Unknown

Patent Dates:
Granted: Jul. 28, 1931

Patent Pictures:
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