Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821475 | Duct mounting structure for prefabricated curtain wall with air conditioning system | Hiroshi Kondo, Toshimasa Kusunoki | 1989-04-18 |
| 4796519 | Prefabricated window unit with air conditioning system | Hiroshi Kondo, Toshimasa Kusunoki | 1989-01-10 |