(under subclass 547) Subject matter wherein the electric heating means is used for the purpose of heating the getter material within the envelope to remove unwanted gas or vapor from the gas or vapor within the envelope of an electrical discharge device.
(1) Note. Here the getter or the getter support may be part of the heating means.
(2) Note. Included are electrical resistance, induction or any other type of electric heaters for the purpose of heating the getter in the envelope.
SEE OR SEARCH THIS CLASS, SUBCLASS:
553+, for a discharge device of the gas, vapor or the vacuum type with a getter whether it is a lamp or electronic tube where no additional heating means is claimed.
