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US Patent: 334,764
Rapidly Adjusting Nut for Calipers and Dividers
Patentee:
Charles P. Fay - Springfield, MA

USPTO Classifications:
33/558.08, 411/432

Tool Categories:
layout tools : calipers
layout tools : compasses : dividers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
John W. Labam
Julius W. Labam
Thomas E. O'Conner
H. Brown

Patent Dates:
Applied: Jul. 17, 1885
Granted: Jan. 26, 1886

Patent Pictures:
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