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Application filed by Reuben HallensteinfiledCriticalReuben Hallenstein
Publication of CH3012ApublicationCriticalpatent/CH3012A/fr
CH3012A1890-10-011890-10-01Appareil servant à actionner les portes fermant les ouvertures pratiquées dans les plancers des bâtiments à ascenseurs
CH3012A
(fr)
Mejoras en aparatos para mover puertas a prueba de fuego destinadas a cerrar los huecos y aberturas que producen los ascensores en los pisos de los edificios.