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US Patent: 75,533
Spirit Level
Patentee:
L. L. Davis - Springfield, MA

USPTO Classifications:
33/387

Tool Categories:
layout tools : levels : inclinometers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. P. Buckland
N. B. Smith

Patent Dates:
Granted: Mar. 17, 1868

Patent Pictures:
USPTO pdf tiff
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