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Patents > Patent agent : E. Blétry or Haseltine, Lake & Co. & National tech categories: None & Number of claims: 2-3

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LTA (12) · design (9) · airplane (9) · construction (9) · stability (6) · Frame (6) · navigation (5) · balloon (5) · Dirigibles (5) · Airship (4) · suspension (4) · dirigible (4) · control (4) · wings (3) · instrument (3)
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