US Patent: 1,475,700
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| Extension Plane
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Patentee:
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| Frank W. Humphreys (exact or similar names) - Ocean City, NJ |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 03, 1922 |
| Granted: |
Nov. 27, 1923 |
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Patent Pictures:
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1 | 2
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Russ Allen.
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Description: |
| Extended base that secures a plane to the top using clamps to secure the front and rear. The blade is extended through both the bottom of the plane and the extra base in order to be utilized. |
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