John Piescik

Follow

Person

Vienna, VA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Packet network based emergency backup telephone system
- Patent number 8,081,623
- Issue date Dec 20, 2011
- Art Technology Group, Inc.
- Ian Halpern
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Packet network based emergency backup telephone system
- Patent number 7,466,689
- Issue date Dec 16, 2008
- Art Technology Group, Inc.
- Ian Halpern
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
PACKET NETWORK BASED EMERGENCY BACKUP TELEPHONE SYSTEM
- Publication number 20090067413
- Publication date Mar 12, 2009
- Ian Halpern
- H04 - ELECTRIC COMMUNICATION TECHNIQUE