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Procedimiento y dispositivo para la poda de los arboles y la inyeccion de un liquido de tratamiento en las llagas de poda otrosi digo: se hace expresamente constar a los efectos del art 57 de la ley, que el procedimiento y
Improvements in and relating to an apparatus for injecting a metered amount of a gasinto a liquid, suitable in particular for use as a chlorination apparatus
Procédé et dispositif pour remplir ou alimenter, à partir de réservoirs, des récipients ou des réseaux de canalisations avec des gaz froids liquéfiés à bas point d'ébullition, en particulier de l'acide carbonique