Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4251566 | Gum thickness regulator | — | 1981-02-17 |
| 4236482 | Apparatus for applying sealing material to envelopes | Robert Cohn | 1980-12-02 |
| 4233931 | Envelope feed apparatus | Robert Cohn | 1980-11-18 |
| 4232592 | Envelope forming machine and method | — | 1980-11-11 |