Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
Charles Henry Stearn
Charles Fred Topham
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Individual
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Individual
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Publication of GB190800461ApublicationCriticalpatent/GB190800461A/en
Non-Portable Lighting Devices Or Systems Thereof
(AREA)
Abstract
461. Stearn, C. H., and Topham, C. F. Jan. 8. Grant of Patent refused. Incandescent lamps.-A U-shaped filament 3 is kept in place by a steel or other spring 2, flattened in a plane at right-angles to that of the filament and provided with a hook or loop 4. The spring is attached to a stem 1 of glass or other material, and several filaments may be supported on one stem.
GB190800461D1908-01-081908-01-08Improvements in connection with Incandescence Electric Lamps.
ExpiredGB190800461A
(en)