US Patent: 129,737
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Improvement in Carpenters' Bevels
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Patentee:
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William H. Laughlin (exact or similar names) - Quincy, IL |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Granted: |
Jul. 23, 1872 |
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Russ Allen.
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Description: |
Complex adjustment mechanism utilizing a double ratchet-pawl, disk, and screw rod that locks the blade in position. |
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