86752 ⎘
Melting in furnaces; Furnaces so far as specially adapted for glass manufacture; Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces Siphons
Vitrified material control system and method
#2Vitrified material control system and method
#3PROCESS AND APPARATUS FOR FORMING MAN-MADE VITEROUS FIBRES
#4PROCESS AND APPARATUS FOR FORMING MAN-MADE VITEROUS FIBRES
#5PROCESS AND APPARATUS FOR FORMING MAN-MADE VITEROUS FIBRES