Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9147303 | Rotary hopper | David Campbell | 2015-09-29 |
| 8140187 | Multiple drawer and compartment vending | David Campbell, Michael V. Smith, Yaron Bukchin | 2012-03-20 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9147303 | Rotary hopper | David Campbell | 2015-09-29 |
| 8140187 | Multiple drawer and compartment vending | David Campbell, Michael V. Smith, Yaron Bukchin | 2012-03-20 |