Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5331757 | Signholder | P. Paul Retzinger | 1994-07-26 |
| 5058300 | Signholder | P. Paul Retzinger | 1991-10-22 |
| 4790093 | Molded plastic signholder | Burton L. Siegal | 1988-12-13 |
| 4726132 | Molded plastic signholder | — | 1988-02-23 |