US Patent: 490,121
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| Protractor Bevel
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Patentee:
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| Herbert J. Leighton (exact or similar names) - Syracuse, NY |
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Patent Dates:
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| Applied: |
May 23, 1892 |
| Granted: |
Jan. 17, 1893 |
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Russ Allen.
"Vintage Machinery" entry for Goodell-Pratt Co.
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Description: |
| Protractor with a semi-circular head with a blade secured to it and a detachable blade to a sector that can be moved concentrically.
Known example marked with the Mfg's info, patent date, and "28". |
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