Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5979055 | Process for producing rollformed sections | Gale E. Sauer | 1999-11-09 | |
| 5495697 | Decorative elements for subceilings | Wesley T. K. Bischel, Joan V. Greenslade, Chester W. Hallett | 1996-03-05 | |
| 5421132 | Decorative elements for subceilings | Wesley T. K. Bischel, Joan V. Greenslade, Chester W. Hallett | 1995-06-06 | $11,663,000 |
| 5265393 | Decorative elements for subceilings | Wesley T. K. Bischel, Joan V. Greenslade, Chester W. Hallett | 1993-11-30 | $11,247,000 |
| 4947607 | Suspended ceiling construction and compression strut therefor | — | 1990-08-14 | $2,348,000 |