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Class 455 Telecommunications Patent Classification Definitions U.S. Dept. Of Commerce December 1988
CLASS 455 TELECOMMUNICATIONS... PATENT CLASSIFICATION DEFINITIONS... U.S. DEPT. OF COMMERCE - PATENT AND TRADEMARK OFFICE... JUNE 1998
Class 340 Communications: Electrical Patent Classification Definitions U.S. Dept. Of Commerce December 1998
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Author: United States. Patent and Trademark Office
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Languages : en
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Class 340 - Communications: Electrical, Patent Classification Definitions, Patent & Trademark Office U.S. Dept. of Commerce, December 1999
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Class 379 - Telephonic Communications, Patent Classification Definitions, Patent & Trademark Office, U.S. Dept. of Commerce, December 1999
Author: United States. Patent and Trademark Office
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Class 359 - Systems (Including Communication) and Elements, Patent Classification Definitions, Patent & Trademark Office, U.S. Dept. of Commerce, December 1999
Author: United States. Patent and Trademark Office
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Languages : en
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Publisher:
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