US PATENT SUBCLASS 379 / 457
MISCELLANEOUS
Current as of:
June, 1999
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379 /
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TELEPHONIC COMMUNICATIONS
457
MISCELLANEOUS
DEFINITION
Classification: 379/457
MISCELLANEOUS:
(under the class definition) Subject matter not provided for in any of the preceding subclasses.
SEE OR SEARCH CLASS
381, Electrical Audio Processing Systems and Devices, appropriate subclasses for one way-audio circuits and audio transducers, per se.
CROSS-REFERENCE ART COLLECTIONS
