Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850855 | Combustion cylinder structure for oil burner | — | 1989-07-25 |
| 4846672 | Combustion cylinder structure for oil burner | Masanori Kawamura | 1989-07-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850855 | Combustion cylinder structure for oil burner | — | 1989-07-25 |
| 4846672 | Combustion cylinder structure for oil burner | Masanori Kawamura | 1989-07-11 |