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DE1060508B
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Quartz glass
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DE1011594B
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Process for the production of quartz glass
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US2494607A
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Optical pyrometer
|
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GB591388A
|
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Process for the treatment of mica
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DE701721C
|
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Insulator, especially for electrical overhead lines
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US1894853A
|
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Apparatus for the drawing of tubular articles
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US1755953A
|
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Manufacture of transparent fused pure silica
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|
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Process for hot-stamping articles of fused silica
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DE496400C
|
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Process for melting quartz in an oxidizing atmosphere
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DE496662C
|
|
Process for the manufacture of quartz objects
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DE510507C
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Process for the manufacture of objects from fused quartz
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