Drilldown: Patents

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Patents > Publication date: 1900 - 1999 & Patent agent : E. Blétry or None & National tech categories: FR 6.3

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LTA (13) · propulsion (12) · ascension (9) · aerostat (8) · navigation (8) · construction (8) · wings (5) · landing (5) · dirigible (5) · parachute (5) · propellers (5) · safety (5) · balloon (5) · stability (5) · texture (5) · descent (4) · airship (4) · sustentation (4) · hybrid (4)
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Showing below up to 36 results in range #1 to #36.

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