Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D301567 | Snap fastener element | — | 1989-06-13 |
| 4818205 | Apparatus for molding a snap fastener onto fabric | Robert J. Zavatkay | 1989-04-04 |
| 4805273 | Snap fastener for molding on to fabric and apparatus for making it | Robert J. Zavatkay | 1989-02-21 |
| 4799248 | X-ray tube having multiple cathode filaments | Avery D. Furbee, Salvatore Perno | 1989-01-17 |
| 4796339 | One-way snap fastener | — | 1989-01-10 |