US Patent: 1,286,332
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| Try-Square
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Patentee:
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| Vernon H. Johns (exact or similar names) - Wauconda, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 27, 1917 |
| Granted: |
Dec. 03, 1918 |
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Ralph Brendler
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Description: |
| This try square features a pivoting blade abd protractor arc to allow it to be set to a specific angle. |
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