(under subclass 133) Subject matter wherein the contacts are arranged in coordinate rows in planes which are at an angle to each other (usually a right angle) or in a grid arrangement, whereby contact is made by displacing one contact perpendicularly to another. The switches found here are for the most part those known as crossbar or coordinate types, similar to those found in Class 379, subclass 25, but not limited by the claim language to use in a telephone system.
SEE OR SEARCH CLASS
340, Communications: Electrical,
825.79+, for matrix type contact arrangements in selective signalling systems.
