Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8724833 | Piezoelectric audible signal with spring contacts and retaining and spacer ring | Raymond W. Hunter, Gary P. Zimmerman, Heather Gregg | 2014-05-13 |
| 7920069 | Audible, piezoelectric signal with integral visual signal | Heather Gregg | 2011-04-05 |
| 7801323 | Sound modifying cap for housing | — | 2010-09-21 |
| 7090454 | Ratchet interlocking housing | — | 2006-08-15 |
| D521403 | Front cap for a panel mounted housing | Ludwin Miguel Mora, Robert E. Mora | 2006-05-23 |