Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811897 | Duct type air conditioning system | Nobuo Otsuka, Peter Thompson | 1989-03-14 |
| 4795088 | Air conditioning system | Nobuo Otsuka, Peter Thompson, Larry J. Stratton | 1989-01-03 |