Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4404768 | Arrangement for releasing a fire curtain in a theater | — | 1983-09-20 |
| 4303237 | Arrangement for supporting theatrical equipment | Donald A. Hoffend, Jr. | 1981-12-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4404768 | Arrangement for releasing a fire curtain in a theater | — | 1983-09-20 |
| 4303237 | Arrangement for supporting theatrical equipment | Donald A. Hoffend, Jr. | 1981-12-01 |