Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887732 | Easy-open lid in which score cut edge can be covered and process for preparation thereof | Hiroshi Matsubayashi, Masanori Aizawa, Michio Watanabe, Takashi Shimizu | 1989-12-19 |