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US Patent: 223,727
Combined Square, Protractor, &c.
Patentee:
Samuel D. Halley - St. Louis, MO

USPTO Classifications:
33/419

Tool Categories:
layout tools : squares : miter squares

Assignees:
Samuel D. Halley - St. Louis, MO
Williams Daman - St. Louis, MO

Manufacturer:
Not known to have been produced

Witnesses:
Charles D. Moody
Samuel S. Boyd

Patent Dates:
Applied: Dec. 06, 1879
Granted: Jan. 20, 1880

Patent Pictures: [ 1 | 2 ]
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