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Patents > CPCs : CPC B64C39/00 or CPC B64C39/005 & Number of text pages: 6-9

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Inventors:
Ruter William Springer (3)
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Ruter William Springer (3) · William Phillips Thompson (2)
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Tech fields:
airplane (18) · frame (10) · stability (9) · propulsion (9) · design (8) · None (7) · wings (7) · propellers (6) · lift (5) · construction (5) · wheels (4) · flapping (4) · navigation (4) · HTA (4)
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