Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7564362 | Alarm actuated pet door lock release mechanism | Brenda Cole, E. Douglas Grindstaff, II | 2009-07-21 |
| 7420473 | Pet alert collar | Gail Eicken, Gary Eicken, E. Douglas Grindstaff, II | 2008-09-02 |