Attribuée à mr Jules Haag pour sa thèse en 1910 ?
En 1906 il est reçu à l'agrégation de mathématiques et en 1910 il obtient son doctorat ès sciences avec une thèse consacrée aux familles de Lamé. Il enseigne la mécanique rationnelle à la faculté des sciences de Clermont-Ferrand.
En 1909 a eu lieu à paris l’exposition universelle de locomotion aérienne au grand palais le premier salon aéronautique du 25 septembre au 17 octobre 1909
Poids: 92,00g
Diametre: 60mm
Graveur: Louis patriarche
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