| 7255045 |
Multi-program trolleys and switches |
— |
2007-08-14 |
| 7185589 |
Multi-program trolleys and switches |
— |
2007-03-06 |
| 6598355 |
Anti-stacking system for operable walls |
— |
2003-07-29 |
| 6581345 |
Track concealing system for operable walls |
Thomas L. Goldsmith |
2003-06-24 |
| 6581242 |
Track and trolley system for movable wall panels |
— |
2003-06-24 |
| 6481359 |
Automatic track switching system for operable walls |
— |
2002-11-19 |
| 6374456 |
Linear motion trolley and track systems for operable walls |
George E. Fort, Jerald A. McRoberts, Melvin W. Tompkins |
2002-04-23 |
| 5499671 |
Anti-float system for operable partitions |
— |
1996-03-19 |
| 5467559 |
Electrically operated drop seal for pass doors in operable walls |
— |
1995-11-21 |
| 5358023 |
Electrically operated expandable jamb for operable walls |
— |
1994-10-25 |
| 5339881 |
Electrically operated drop seal for operable walls |
— |
1994-08-23 |
| 5329857 |
Track switch for suspended movable wall panels |
— |
1994-07-19 |
| 5042555 |
Floor-supported movable wall panel with height adjustment system |
— |
1991-08-27 |
| 4837891 |
Track and trolley with dual drive wheels having annular track engaging surfaces of different diameters |
John W. Toma |
1989-06-13 |