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Patents > Tech fields : Airship or hydrogen & CPCs: CPC B64B1/00

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None (3) · Rodolfo Verduzio (2) · George Holt Thomas (2) · Johann Schütte (2) · Frédéric Malfait (2) · John Arthur Armstrong (2) · Frank John Tippen (2) · Louis Coutant Badeau (2) · Arno Boener (2) · Arthur James Roberts (2)
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None (6) · Louis Coutant Badeau (2) · Johann Schütte (2) · George Holt Thomas (2) · Arno Boener (2) · Arthur James Roberts (2) · John Arthur Armstrong (2) · Frédéric Malfait (2) · Rodolfo Verduzio (2) · Frank John Tippen (2)
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None (12)
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CPCs: (Click arrow to add another value)
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