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Patents > Year granted: 1920 & Office: DE & Applicant is inventor: Yes

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Tech fields:
airplane (8) · None (6) · wings (6) · frame (6) · propeller (6) · Fuselage (5) · subsystem (4) · metal (4) · construction (4) · stability (4) · design (3)
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CPCs:
CPC B64C17/00 (6) · CPC B64C3/00 (5) · None (3) · CPC B64C35/00 (3) · CPC B64C2700/6212 (2) · CPC B64C2700/6235 (2) · CPC B64C2700/6256 (2) · CPC B64C3/26 (2) · CPC B64C13/00 (2) · CPC B64C2700/6218 (2) · CPC B64C11/04 (2) · CPC B64C1/12 (2) · CPC B64F2700/6226 (2) · CPC B64F2700/6261 (2)
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