.~.~ Hermetic sealed envelope type (e.g., with exhaust stem) {3}
17.07
.~.~.~ Combined lead-in and exhaust tube
DEFINITION
Classification: 174/17.07
(under subclass 17.05) Subject matter wherein the box, housing or envelope is provided with an evacuating stem formed of conductive material which is also used as a lead-in conductor for conducting electrical energy to the device within the box, housing or envelope.
(1) Note. This subclass does not include boxes, housings or envelopes where a solid lead-in conductor merely passes through a nonconductor (e.g., glass) evacuating stem.
SEE OR SEARCH THIS CLASS, SUBCLASS:
9, where the lead-in conductor is a liquid which is also used to seal a joint so as to make the joint fluid tight.
