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GB191212270A
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Improvements in Mercury-vapour Lamps.
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US1059786A
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Process and device for lighting submerged ultra-violet-ray sterilizing lamps.
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US1089990A
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Sterilizer.
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US1030692A
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Apparatus for sterilizing liquids by means of ultra-violet rays.
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GB191109047A
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Improved Apparatus for Sterilizing Liquids by Means of the Ultra Violet Rays.
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US1064571A
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Base for electric incandescent lamps.
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GB190813449A
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Tool for Seizing and Holding Filaments of Electric Incandescent Lamps by Means of a Sucking Action.
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GB190709483A
|
|
Improvements in Incandescent Electric Lamps.
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GB190705925A
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An Improved Primary Cell
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