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US Patent: 1,876,473
Plumb Bob and Chalk Line
Patentees:
Frederick C. Spaeth (exact or similar names) - Williamsport, PA
Millard A. Gibson (exact or similar names) - Lock Haven, PA

USPTO Classifications:
33/393, 33/414

Tool Categories:
layout tools : plumb bobs

Assignees:
Millard A. Gibson - Lock Haven, PA

Manufacturer:
Unknown

Witnesses:
Unknown
Patent Dates:
Applied: Mar. 12, 1930
Granted: Sep. 06, 1932

Patent Pictures: [ 1 | 2 ]
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