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US Patent: 250,080
Spirit Level
Patentee:
Frederic Kraengel (exact or similar names) - Buffalo, NY

USPTO Classifications:
33/350, 33/384

Tool Categories:
layout tools : levels : inclinometers

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Michael J. Stark
Frank Hirsch
Al. Stark
Willie O. Stark
Patent Dates:
Applied: Feb. 09, 1881
Granted: Nov. 29, 1881

Patent Pictures: [ 1 | 2 ]
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Martin J. Donnelly Antique Tools
Description:
Michael J. Stark - patent attorney

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