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US Patent: 316,530
Line Chalker and Plumb Bob
Patentees:
James Livingstone Downie - Allegheny, PA
Eugene Hardin - Allegheny, PA

USPTO Classifications:
33/332, 33/414

Tool Categories:
layout tools : plumb bobs

Assignees:
None

Manufacturer:
Unknown

Witnesses:
J. I. Anderson
B. M. Downie

Patent Dates:
Applied: Jan. 12, 1885
Granted: Apr. 28, 1885

Patent Pictures:
USPTO pdf tiff
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