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SU948923A1
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Photochrome borate glass containing silver and halide
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Apparatus for calibrating thermoplastic tubes and similar objects
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Heat-absorbing glasses
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GB910135A
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Improvements in optical borate glasses
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GB845952A
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Improvements in beryllium fluoride glasses of extremely low refraction
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Vessel with electric floor heating
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Process for the production of light filters with a desired intensity profile
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Adjustment and lifting device for glass cocks
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Device for heating liquids or steam
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Process for the production of optical quartz glass
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DE943351C
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Vessels and tubes made of glass, quartz or ceramic materials for chemical apparatus
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DE918418C
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Glass tube cooler for liquid steam
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