Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819587 | Multiple-purpose instantaneous gas water heater | Osamu Tsutsui, Hideki Kawaguchi, Keiji Hayashi, Shingo Tanaka, Hiroshi Kobayashi +2 more | 1989-04-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819587 | Multiple-purpose instantaneous gas water heater | Osamu Tsutsui, Hideki Kawaguchi, Keiji Hayashi, Shingo Tanaka, Hiroshi Kobayashi +2 more | 1989-04-11 |