Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6312152 | Electronic module for conventional parking meter | Mark R. Dee | 2001-11-06 |
| 5966345 | Electronic module for conventional parking meter | Mark R. Dee | 1999-10-12 |
| 5903520 | Electronic module for conventional parking meter | Mark R. Dee | 1999-05-11 |
| 5710743 | Electronic module for conventional parking meter | Mark R. Dee | 1998-01-20 |