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Patents > Office : FR or GB or IN or NO & Grant date: 1909 & CPCs : CPC B64C23/005 or CPC B64C2700/6281 & First filing: No

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None (11) · Airplane (4) · Hybrid (4) · Ascension (3) · Design (2) · navigation (2) · LTA (2) · Gas (2) · Helicopter (2) · Ballonet (2)
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