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US Patent: 1,178,706
Compasses and Dividers
Patentee:
Charles Diedrichs, Sr. (exact or similar names) - Hackensack, NJ

USPTO Classifications:
33/27.02

Tool Categories:
layout tools : compasses : dividers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Robert B. Abbott
M. Dermody
Patent Dates:
Applied: Jun. 25, 1915
Granted: Apr. 11, 1916

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