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US Patent: 365,033
Spirit Level
Patentee:
Oscar D. Wood - Passaic, NJ

USPTO Classifications:
33/290, 33/379

Tool Categories:
layout tools : levels : wooden levels

Assignees:
None

Manufacturer:
Tower & Lyon - New York, NY

Witnesses:
J. E. Stoutenburgh
Leonard L. Grear

Patent Dates:
Applied: Apr. 07, 1887
Granted: Jun. 14, 1887

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
Retractable pop-up sights.

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