Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5049432 | Method for preparing a marking structure | Willem Ooms, Frank R. Moss, Robert E. Ponter, David L. Hedgecoth | 1991-09-17 |
| 4927695 | Microporous marking structures | Willem Ooms, Frank R. Moss, Robert E. Ponter, David L. Hedgecoth | 1990-05-22 |