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US Patent: D42,347
Design for a Level
Patentee:
Andrew D. Armstrong (exact or similar names) - Chicago, IL

USPTO Classifications:
D10/69

Tool Categories:
layout tools : levels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Helen F. Lillis
Joshua R. H. Potts
Patent Dates:
Applied: Apr. 21, 1911
Granted: Mar. 26, 1912

Patent Pictures:
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Report data errors or omissions to steward Russ Allen.
Description:
Ornamental design for a level that is attached externally to a board. Patent term of 7 years.

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