Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5285958 | Two way envelope | — | 1994-02-15 |
| 5169061 | Two way envelope | — | 1992-12-08 |
| 4815654 | Envelope having a remailable portion | — | 1989-03-28 |
| 4334618 | Stationery having snap-open envelope with remailable portion | — | 1982-06-15 |
| 4190162 | Stationery having snap-open envelope with remailable portion | — | 1980-02-26 |