.~ Vacuum or hermetically sealed type (e.g., reed switch) {3}
152
.~.~ Plural
DEFINITION
Classification: 335/152
(under subclass 151) Subject matter wherein the structure includes at least two or more separate and distinct devices under the subclass 151 definition. The devices are usually mounted in a group or cluster all being under the influence of a single magnetic flux source and may act cooperatively or individually.
SEE OR SEARCH THIS CLASS, SUBCLASS:
11, for structure of plural switches of the automatic circuit
interrupting type.
88+, for plural switches of the periodic or vibrator type.
159+, for subject matter comprehending plural independently operative switches where the switches are disclosed as vacuum switches but in which no significant details of the switches are claimed except in name only.
206, for plural switches of the permanent magnet actuated type. SEE OR SEARCH CLASS
340, Communications: Electrical,
825.79+, for matrix type selective signalling systems utilizing reed switches.
