| 8272053 |
Physical security management system |
Thomas R. Markham |
2012-09-18 |
| 8229131 |
Systems and methods for delivering directional audio and personalized emergency alerts via addressable speakers |
Thomas A. Plocher, Andrew G. Berezowski |
2012-07-24 |
| 8191139 |
Intrusion detection report correlator and analyzer |
Jon Schewe |
2012-05-29 |
| 7797116 |
System and method of acoustic detection and location of fire sprinkler water discharge |
Andrew G. Berezowski, Charles R. Obranovich, John Phelps, Michael D. Shields, Philip Zumsteg |
2010-09-14 |
| 7702112 |
Intelligibility measurement of audio announcement systems |
Charles R. Obranovich, Philip Zumsteg, Andrew G. Berezowski, John Phelps |
2010-04-20 |
| 7639147 |
System and method of acoustic detection and location of audible alarm devices |
Andrew G. Berezowski, Charles R. Obranovich, John Phelps, D. Michael Shields, Philip Zumsteg |
2009-12-29 |
| 7545263 |
Audio-based presentation system |
Thomas A. Plocher, Jeffrey M. Rye, Steve Huseth |
2009-06-09 |
| 7461289 |
System and method for computer service security |
Ryan A. VanRiper, David Musliner, Michael Pelican |
2008-12-02 |
| 7433821 |
Methods and systems for intelligibility measurement of audio announcement systems |
Charles R. Obranovich, Philip Zumsteg, Andrew G. Berezowski, John Phelps, D. Michael Shields |
2008-10-07 |