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Electric incandescent lamp with gas filling and a holder for the incandescent wire.
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A Process for Fusing Refractory Materials.
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Improvements in the Manufacture from Refractory Material of Parts of Electric Glow-lamps.
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Improvements in and relating to the Moulding and Casting of Ceramic or Fire-proof Material.
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Improvements in the Manufacture of Ceramic or Fire-proof Material.
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Improvements in the Manufacture of Ceramic or Fire-proof Material.
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Improvements in Vapor Electric Apparatus.
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Improvements in Vapour Electric Apparatus.
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Electric vapor arc-lamp.
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Electric vapor apparatus.
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Apparatus for the production of finely divided materials
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Device for flattening and rolling metal powders
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