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H04Q2213/215

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HELECTRICITY H04Electric communication H04QSELECTING H04Q2213/00Indexing scheme relating to selecting arrangements in general and for multiplex systems

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H04Q2213/215Code checking

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Patents Grantslast 30 patents

Information Patent Grant
Conversion of ISDN LAPB and ISDN LAPD frames
- Patent number 5,467,350
- Issue date Nov 14, 1995
- International Business Machines Corporation
- Steven Price
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital telephone system with terminals connected to a digital exch...
- Patent number 5,402,483
- Issue date Mar 28, 1995
- Siemens Aktiengesellschaft
- Gunter Weinberger
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Passive bus communication using alternate CRC
- Patent number 4,891,813
- Issue date Jan 2, 1990
- Racal Data Communications Inc.
- Rafael E. Salcedo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents