Method of making a glass preform

Details Method of making a glass preform Method of making a glass preform

C - Chemistry, Metallurgy

03

B

C03B 37/027 (2006.01) C03B 37/012 (2006.01)

Patent

CA 2332123

A thing (32) has an aperture (10) in it. The thing is heated and drawn. The thing is heated again and drawn again. The aperture is evacuated.

La présente invention concerne une pièce (32) comportant une ouverture (10). Cette pièce est chauffée et étirée une première fois, puis une seconde fois. L'ouverture est éliminée.

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