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US Patent: 453,890
Combined folding rule and try square
Patentee:
Robert Oerlein (exact or similar names) - New Orleans, LA

USPTO Classifications:
33/465

Tool Categories:

Assignees:
None

Manufacturer:
Unknown

Witnesses:
Henry J. Rhodes
Percy D. Parks
Patent Dates:
Applied: Aug. 14, 1888
Granted: Jun. 09, 1891

Patent Pictures: [ 1 | 2 | 3 ]
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Description:
One of these appeared in a Martin J. Donnelly auction

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