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Application filed by Philips NvfiledCriticalPhilips Nv
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Publication of DK82601CpublicationCriticalpatent/DK82601C/en
DK107854A1953-04-041954-04-01
Tubular lamp with two end sockets and with a helically wound filament placed in the longitudinal direction of the tube.
DK82601C
(en)