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Patents > Office : ?? or DE or FI or SU or US & National tech categories : DE 77 or DE 77h.6 & IPCs: None & Number of text pages: 1-2 & Number of diagram pages: 1

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None (4) · Raphael Ernst May (2) · Paul Frederik Degn (2) · Christian Lorenzen (2) · Richard Czygan (2) · Hellmuth Hirth (2) · Henry Boinet (2)
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LTA (28) · propeller (26) · propulsion (21) · balloon (13) · navigation (9) · frame (8) · car (8) · marine (5) · subsystem (4) · airplane (4) · parachute (4) · dirigible (3) · stability (3) · piloting (3) · electricity (3) · None (3) · captive (3)
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Showing below up to 71 results in range #1 to #71.

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