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US Patent: 619,813
Beam Compass
Patentees:
Robert Chester Weishampel (exact or similar names) - Baltimore, MD
Frank K. Duncan (exact or similar names) - Baltimore, MD

USPTO Classifications:
33/27.03

Tool Categories:
layout tools : compasses : trammels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Fenton S. Belt
J Ahlbilson
A. E. Shinn
Frank X. Ward

Patent Dates:
Applied: May 13, 1898
Granted: Feb. 21, 1899

Patent Pictures:
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