Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7856289 | Method and apparatus for conserving power consumed by a vending machine utilizing audio signal detection | David J. Schanin, Dan Van der Hoop | 2010-12-21 |
| 7286907 | Method and apparatus for conserving power consumed by a refrigerated appliance utilizing audio signal detection | David J. Schanin, Dan Van der Hoop | 2007-10-23 |