Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4648230 | Locking connection for suspension ceiling grid systems | David F. Mieyal, Richard Shirey | 1987-03-10 |
| 4621474 | Grid connectors for suspension ceiling | — | 1986-11-11 |
| 4611453 | Suspension ceiling grid connectors | — | 1986-09-16 |
| 4520609 | Grid tee for suspension ceilings or the like | Jeffrey L. Petras | 1985-06-04 |
| 4448006 | Grid ceiling structure and method of converting | — | 1984-05-15 |
| 4312158 | Fire-resistant demountable partition structure | Jonathan P. Teli | 1982-01-26 |