Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862531 | Bedding foundation having snap-in place formed wire springs | — | 1989-09-05 |
| 4862532 | Bedding foundation having snap-in place sinuous wire springs | Angelo Serafini, Sidney A. Hiatt, Henry Zapletal | 1989-09-05 |