H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/84
H01J 5/08 (2006.01) C03C 17/42 (2006.01) G02B 5/28 (2006.01) H01K 1/32 (2006.01)
Patent
CA 1259097
ABSTRACT: The electric lamp according to the invention has a lamp vessel (1) of glass having an SiO2 content of at least 95 % by weight, in which an electric element (3) is arranged. The lamp vessel is coated with an interference filter (5) of alternating layers of SiO2 and Nb205.
510845
Fetherstonhaugh & Co.
Koninklijke Philips Electronics N.v.
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