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Patents > Office : DE or DK or NZ or RU & Inventors: None & Inventor country: DE & Applicant is inventor: Yes

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Tech fields:
frame (15) · None (13) · airplane (13) · construction (10) · propeller (6) · LTA (6) · biplane (5) · subsystem (5) · propulsion (4) · stability (3) · airship (3) · fuselage (3) · design (3)
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