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Patents > Filing date: September 1915

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None (6) · Everard Richard Calthrop (4) · Clarence Gaston Walker (2)
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None (13) · Airplane (8) · construction (5) · design (5) · military (4) · stability (4) · balloons (4) · Subsystem (4) · LTA (3) · nacelle (3) · wings (3)
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