| 6446406 |
Direct attached grid |
— |
2002-09-10 |
| 6305139 |
Beam clip |
— |
2001-10-23 |
| 6199343 |
Connector assembly for ceiling grid |
Yu Lin, Larry S. Wertz, Jr. |
2001-03-13 |
| 6178712 |
Locking connection for ceiling grid system |
— |
2001-01-30 |
| 5979055 |
Process for producing rollformed sections |
Henry G. Stein |
1999-11-09 |
| 5363622 |
Fire-rated drywall suspension system |
— |
1994-11-15 |
| 5347783 |
Prenotched fire-rated runner |
Sandor A. Frecska, Ernest B. Nute, Jr. |
1994-09-20 |
| 5313750 |
Fire-rated runner |
Sandor A. Frecska |
1994-05-24 |
| 4969346 |
Apparatus for producing cold roll-formed structures |
George F. Bosl, Patrick M. Kelly, Dennis A. Alvarez, Joseph A. Hocevar |
1990-11-13 |
| 4881355 |
Cold roll-formed structures and method and apparatus for producing same |
George F. Bosl, Patrick M. Kelly, Dennis A. Alvarez, Joseph A. Hocevar |
1989-11-21 |
| 4770018 |
Method for producing cold roll-formed structures |
George F. Bosl, Patrick M. Kelly, Dennis A. Alvarez, Joseph A. Hocevar |
1988-09-13 |
| 4628656 |
Demountable wall panel |
Robert J. Menchetti, Robert H. Safran |
1986-12-16 |
| 4583340 |
Fixture support clip for suspension ceiling grid systems |
— |
1986-04-22 |
| 4574547 |
Window system for demountable walls |
Robert J. Menchetti, Robert H. Safran |
1986-03-11 |
| 4531340 |
Beam splice for supporting grid systems |
— |
1985-07-30 |
| 4514945 |
Window insulating system |
Robert J. Menchetti |
1985-05-07 |
| 4484428 |
Suspended ceiling grid system |
— |
1984-11-27 |
| 4470239 |
Suspended ceiling grid system |
— |
1984-09-11 |
| RE31201 |
Locking connection for supporting grid systems |
— |
1983-04-12 |
| 4317318 |
Supporting grid system having interchangeable T sections |
— |
1982-03-02 |
| 4317641 |
Locking connection for supporting grid systems |
— |
1982-03-02 |
| 4208851 |
Suspended ceiling system |
— |
1980-06-24 |
| 4205815 |
Shelf bracket, shelf bracket-stud combination and shelf bracket-clip combination |
John A. Gasper |
1980-06-03 |