Drilldown: Patents

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Patents > Year filed: 1900 - 1909 & Inventor country: DE & IPCs : IPC B64B1/00 or IPC B64C25/00 or IPC B64C39/00

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LTA (21) · frame (9) · propulsion (7) · airplane (6) · None (6) · stability (5) · design (5) · car (4) · navigation (4) · Dirigibles (4) · balloon (3) · balloons (3) · Rudder (3) · safety (3) · subsystem (3) · suspension (3) · Whole (3) · propellers (3)
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