Pierre-Joseph Ravel

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Pierre-Joseph Ravel was an aero inventor, a construction engineer, Paris (3, place de Wagram, Seine), registering with Anacharsis Menier, Jean-Baptiste Menier, Eugène Menier and Léopold Menier.

Patents whose inventor or applicant is Pierre-Joseph Ravel

Patent FR-1870-91114 (English title: Hot-Air Balloon, Filing date: 1870-12-08)

References

http://bases-brevets19e.inpi.fr/index.asp?page=rechercheAvancee http://bases-brevets19e.inpi.fr/Thot/FrmFicheDoc.asp?idfiche=0300892&refFiche=0168409

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Inventors