DK84719C -
Electric incandescent lamp whose container is lined on the inside with a layer of powdered, light-scattering water-insoluble alkaline earth metal compounds, and method of manufacturing the lamp.
- Google Patents
Electric incandescent lamp whose container is lined on the inside with a layer of powdered, light-scattering water-insoluble alkaline earth metal compounds, and method of manufacturing the lamp.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips NvfiledCriticalPhilips Nv
Application grantedgrantedCritical
Publication of DK84719CpublicationCriticalpatent/DK84719C/en
DK62955A1954-02-261955-02-23
Electric incandescent lamp whose container is lined on the inside with a layer of powdered, light-scattering water-insoluble alkaline earth metal compounds, and method of manufacturing the lamp.
DK84719C
(en)
Electric incandescent lamp whose container is lined on the inside with a layer of powdered, light-scattering water-insoluble alkaline earth metal compounds, and method of manufacturing the lamp.
Container with an inner lining of a relatively thin and resistant material layer, which is dense and resistant to the intended contents, as well as an outer, mechanically stiffer casing and method for manufacturing the container.
Electric incandescent lamp whose container is lined on the inside with a layer of powdered, light-scattering water-insoluble alkaline earth metal compounds, and method of manufacturing the lamp.