Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842928 | Loose-fill insulation | — | 1989-06-27 |
| 4835045 | Fiber glass board and method of manufacture | Theodore R. Rohweder, Richard J. Ray | 1989-05-30 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842928 | Loose-fill insulation | — | 1989-06-27 |
| 4835045 | Fiber glass board and method of manufacture | Theodore R. Rohweder, Richard J. Ray | 1989-05-30 |