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Patents > Patent agent : Caïus Danzer or Victor J. Evans & Number of diagram pages: 3-4

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Inventors:
Robert P. Hall (2) · George Lehberger (2) · Axel R. Nordstrom (2)
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Applicant person:
Gustav F. Hellstrom Jr (2) · George Lehberger (2) · Axel R. Nordstrom (2) · Carin E. Norwall (2) · Martin Bowman (2) · Gustav F. Hellstrom Sr (2) · Robert P. Hall (2)
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Tech fields:
None (17) · airplane (7) · stability (7) · rudder (7) · propulsion (6) · frame (6) · hybrid (6) · navigation (5) · safety (4) · propeller (4) · LTA (3) · helicopter (3) · airship (3)
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None (5)
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