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US Patent: 2,139,251
Measuring Instrument
Patentee:
Willis Fay Aller (exact or similar names) - Dayton, OH

USPTO Classifications:
33/556

Tool Categories:
layout tools : measurement gauges

Assignees:
The Sheffield Gage Corp. - Dayton, OH

Manufacturer:
Not known to have been produced

Witnesses:
none listed
Patent Dates:
Applied: Mar. 01, 1937
Granted: Dec. 06, 1938

Patent Pictures: [ 1 | 2 ]
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