Chi K. Lam

Follow

Person

Morganville, NJ, US

People

Patents Grantslast 30 patents

Information Patent Grant
International call back technique with reduced post dialing delay
- Patent number 5,987,112
- Issue date Nov 16, 1999
- AT&T Corp.
- Arvind S. Chakravarti
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for initiating a telephone call on a remote line
- Patent number 5,901,202
- Issue date May 4, 1999
- AT&T Corp.
- Chi K. Lam
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dual-tone multi-frequency signal transfer protocol
- Patent number 5,835,574
- Issue date Nov 10, 1998
- AT&T Corp.
- Chi K. Lam
- H04 - ELECTRIC COMMUNICATION TECHNIQUE