Issued Patents All Time
Showing 26–50 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5042213 | Channel utility notch | Robert M. Chapman | 1991-08-27 |
| 4995215 | Panels with laminated strips for clips | — | 1991-02-26 |
| 4976083 | Panels with laminated strips for clips | — | 1990-12-11 |
| 4936067 | Stud extender interlock and method of erection | — | 1990-06-26 |
| 4907773 | Adjustable mounting surface | Robert M. Chapman | 1990-03-13 |
| 4901485 | Acoustical panel | Andrew E. Heuer | 1990-02-20 |
| 4897978 | Panel edge alignment clip | — | 1990-02-06 |
| 4870794 | Clip for outwardly opening C-stud | — | 1989-10-03 |
| 4845904 | C-stud and wedged bracket | — | 1989-07-11 |
| 4843784 | Integral wallboard and stud | Richard P. Weir, Robert M. Chapman | 1989-07-04 |
| 4843771 | Wall trim member | Robert M. Chapman | 1989-07-04 |
| 4837988 | Universal secondary stud | Richard P. Weir | 1989-06-13 |
| 4811539 | Wall framing system | — | 1989-03-14 |
| 4802321 | Sag resistant ceiling panel | — | 1989-02-07 |
| 4800695 | Electrical raceway floor track | — | 1989-01-31 |
| 4796396 | Integral wallboard and stud | — | 1989-01-10 |
| 4704837 | Wall construction | Robert M. Chapman | 1987-11-10 |
| 4700515 | Wall panel leveling support clip | Robert M. Chapman | 1987-10-20 |
| 4693047 | Bendable channel retainer | — | 1987-09-15 |
| 4689930 | Partition structure | — | 1987-09-01 |
| 4642418 | Utility module for walls and the like | — | 1987-02-10 |
| 4628656 | Demountable wall panel | Robert H. Safran, Gale E. Sauer | 1986-12-16 |
| 4603229 | Utility module for walls | — | 1986-07-29 |
| 4574547 | Window system for demountable walls | Robert H. Safran, Gale E. Sauer | 1986-03-11 |
| 4514945 | Window insulating system | Gale E. Sauer | 1985-05-07 |