Rouben Toumani

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Teheran, IR

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Patents Grantslast 30 patents

Information Patent Grant
Transceivers for single channel carrier telephone systems
- Patent number 4,028,628
- Issue date Jun 7, 1977
- Bell Telephone Laboratories, Incorporated
- Tadikonda Narashimha Rao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone ringing generators
- Patent number 4,015,091
- Issue date Mar 29, 1977
- Bell Telephone Laboratories, Incorporated
- Tadikonda Narasimha Rao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE