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Patents > CPCs : CPC B63H23/32 or CPC B64B1/00 & Number of text pages: 1

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None (4) · Eleazer Kempshall (2)
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LTA (38) · balloon (12) · frame (8) · airship (8) · propulsion (7) · dirigible (6) · navigation (6) · hybrid (6) · car (5) · control (5) · fabric (5) · propeller (5) · ascension (4) · rigid (4) · balloons (3) · Construction (3) · design (3)
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