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Expired
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Julius Wilhelm Hardt
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Individual
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Individual
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Publication of GB190706322ApublicationCriticalpatent/GB190706322A/en
Non-Portable Lighting Devices Or Systems Thereof
(AREA)
Abstract
6322. Hardt, J. W. March 15. Incandescent gas lamps ; reflectors.-In an incandescent gas lamp having an inverted, conical, or arched reflector b closed at the apex for throwing the light upwards against the ceiling or walls to produce diffused light, the air inlets d of the Bunsen burners f are arranged below the reflector b.
GB190706322D1907-03-151907-03-15Improvements in Gas Light Apparatus
ExpiredGB190706322A
(en)