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Patents > Office : ?? or CA or DE or RU or SE or Other & IPCs : B64C11/34 or IPC B64B1/58 & First filing: Yes & Number of text pages: 3-70

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LTA (23) · navigation (8) · frame (8) · balloon (7) · airship (6) · stability (5) · ballonet (4) · propulsion (4) · gas (3) · rudder (3) · construction (3) · design (3) · marine (3) · dirigible (3)
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