US PATENT SUBCLASS 313 / 635
.~.~ Envelope layer or coating
Current as of:
June, 1999
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313 /
HD
ELECTRIC LAMP AND DISCHARGE DEVICES
567
DF
WITH GAS OR VAPOR
{24}
634
DF
.~ Envelope with particular structure {1}
635
.~.~ Envelope layer or coating
DEFINITION
Classification: 313/635
Envelope layer or coating:
(under subclass 634) Subject matter wherein the envelope has a coating or layer on the internal or external surface of the envelope.
(1) Note. The covering is considered structure. If the coating is used as an electrode see the electrode subclasses.
(2) Note. A glaze on the inside or the outside of the envelope is considered structure.
SEE OR SEARCH CLASS
118, Coating Apparatus,
50, for vacuum or fluid pressure chamber type coating apparatus and subclasses 620+ for coating apparatus using
means to apply electrical and/or radiant energy to work and/or coating material.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture, 99+, for methods of making an optically transparent sandwich.
427, Coating Processes, 106+ for processes for coating a hollow electrical article or the product produced.
