Registered U.S. Patent Office Array Phasing Techniques for Wide Area Coverage in a Failure Mode.Inventors: Gans, Michael J.; Penzias, Arno A., Assignee: AT&T Bell Laboratories. Issue Date: 10/18/83. U.S. Patent Number: 4410894 Conference Call Participation Tracking.Inventor: Penzias, Arno A., Assignee: AT&T Corp. Issue Date: 9/12/95. U.S. Patent Number: 5450481 Fraud Protection for Card Transactions.Inventor: Penzias, Arno A., Assignee: AT&T Bell Laboratories. Issue Date: 5/10/94. U.S. Patent Number: 5311594 Interface between Text and Voice Messaging Systems.Inventor: Penzias, Arno A., Assignee: AT&T Corp. Issue Date: 12/12/95. U.S. Patent Number: 5475738 Method of Manufacturing Semiconductor Diodes for Use in Millimeter-Wave Circuits.Inventors: Carlson, Eric Robert; Penzias, Arno Allan; Schneider, Martin Victor., Assignee: AT&T Bell Laboratories. Issue Date: 5/17/77. U.S. Patent Number: 4023258 Stabilizer for Reflector of a Pole-Mounted Antenna.Inventor: Penzias, Arno A., Assignee: AT&T Bell Laboratories. Issue Date: 9/14/71. U.S. Patent Number: 3605105 System for Playing Card Games Remotely.Inventor: Penzias, Arno A., Assignee: AT&T Corp. Issue Date: 3/14/95. U.S. Patent Number: 5397133 Telecommunications Rate Data Base Accessing.Inventors: Penzias, Arno A; Young, Joel K., Assignee: AT&T Corp. Issue Date: 12/5/95. U.S. Patent Number: 5473630 Telecommunications System with Active Database.Inventors: Belanger, David G.; Penzias, Arno A.; Young Joel K., Assignee: AT&T Corp. Issue Date: 5/7/96. U.S. Patent Number: 5515425