Drilldown: Patents

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Patents > Inventor country: DE & Filing date: 1910 - 1919 & Number of claims: 7-15

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airplane (12) · LTA (12) · frame (8) · subsystem (8) · Airship (8) · Gas (7) · stability (6) · balloon (6) · safety (6) · control (5) · None (5) · ballonet (5) · wings (5) · navigation (4) · landing (4) · Construction (4)
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