Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869515 | Metal plate with reinforced beads for a metal gasket | Tatsuro Uchida | 1989-09-26 |
| 4869516 | Steel laminate gaskets | Tsunekazu Udagawa, Yasuji Hiramatsu, Hidetaka Nakasone | 1989-09-26 |
| 4823161 | Cleaning blade for electrophotographic copying machines or the like | Mitsuaki Hashiyama | 1989-04-18 |
| 4809653 | Steel laminate type cylinder head gasket | Tsunekazu Udagawa | 1989-03-07 |
| 4803965 | Steel laminate type cylinder head gasket | Tsunekazu Udagawa | 1989-02-14 |