Society of Glass Technology · [Sheffield] · leaf 742
Fia. 234. … Fig. 235. 18—2 260 JOURNAL OF THE SOCIETY OF GLASS TECHNOLOGY. Fig. 230. is the subject of a separate patent, No. 1256980, and anothermodification is the subject of a third patent, No. 1323450.* A further modification of the invention, shown in Fig. 234,consists in forming an exit orifice in the…
Glass
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