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EMANUEL SPREKMEESTER
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EMANUEL SPREKMEESTER
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Application filed by EMANUEL SPREKMEESTERfiledCriticalEMANUEL SPREKMEESTER
Application grantedgrantedCritical
Publication of FR401459ApublicationCriticalpatent/FR401459A/fr
Système de déplacement de la nacelle d'un ballon dirigeable en vue d'obtenir l'équilibre et de faire varier la hauteur, sans déformation de la suspension