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US Patent: 844,157
Drafting Instrument
Patentee:
Leroy R. Loughborough - Rochester, Monroe County, NY

USPTO Classifications:
33/27.03, 33/474

Tool Categories:
layout tools : squares
trade specific : draftsman

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
G. B. Loughborough
C. H. Van Nest
Robert Weitknecht
Louis W. Gratz

Patent Dates:
Applied: Feb. 20, 1905
Granted: Feb. 12, 1907

Patent Pictures:
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