US Patent: 223,709
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| Framing Squares
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Patentee:
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| Mahlon B. Cornell (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 17, 1879 |
| Granted: |
Jan. 20, 1880 |
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Joel Havens
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Description: |
| My invention consists in a combined rule, square, and gage for carpenters' use in framing, the object of the invention being to furnish an implement adapted for carrying out all the purposes for which the ordinary square is used with greater facility, convenience, and accuracy.
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