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Patents > Inventor country : AT or GB & Number of figures: 13-15

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Inventors:
None (5) · Ignaz Etrich (3) · Everard Richard Calthrop (3) · Émile Pupin (3) · Edward Eugene Brown (3) · Franz Xaver Wels (3) · Dermot Joseph Mooney (2) · Richard Ralph à Court Beadon (2) · William Frederic Saunt (2) · Edmund Sparmann (2)
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Applicant person:
None (9) · Edward Eugene Brown (3) · Franz Xaver Wels (3) · Everard Richard Calthrop‎‎ (3) · Émile Pupin (3) · Ignaz Etrich (3) · Dermot Joseph Mooney (2) · William Frederic Saunt (2) · Richard Ralph à Court Beadon (2) · Edmund Sparmann (2)
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Tech fields:
airplane (16) · Construction (10) · Frame (9) · stability (9) · propulsion (7) · design (7) · None (5) · control (5) · Wings (5) · navigation (5) · LTA (4) · propellers (4) · marine (3) · fuselage (3) · Ornithopter (3) · lift (3) · structure (3) · propeller (3) · aerodynamics (3)
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Citations from after 1930:
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