Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867989 | Chewing gum mineral supplement | Jose N. Silva, Robert J. Huzinec | 1989-09-19 |
| 4828845 | Xylitol coated comestible and method of preparation | Allan H. Graff | 1989-05-09 |
| 4808418 | Heterogenous chewing gum composition and method of preparation | Allan H. Graff | 1989-02-28 |