Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871006 | Dual fluted shade | Joseph C. Hsu | 1989-10-03 |
| 4795515 | Process and equipment for making hexagon insulating shade | Joseph C. Hsu | 1989-01-03 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871006 | Dual fluted shade | Joseph C. Hsu | 1989-10-03 |
| 4795515 | Process and equipment for making hexagon insulating shade | Joseph C. Hsu | 1989-01-03 |