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US Patent: 909,686
Protractor
Patentee:
Charles O. Schellenbach (exact or similar names) - Cincinnati, Hamilton County, OH

USPTO Classifications:
33/43, 33/468

Tool Categories:
metalworking tools : machinist tools : measuring tools : protractors

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jun. 22, 1908
Granted: Jan. 12, 1909

Patent Pictures:
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