Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5625006 | Adhesive beads | Joseph P. Callahan, Jr., Mark D. Weigel | 1997-04-29 |
| 5599618 | Method of magnetically and/or electrostatically positioning pressure-sensitive adhesive beads and magnetically positionable pressure-sensitive | Joseph P. Callahan, Jr., Michael S. Groess, Mark D. Weigel | 1997-02-04 |