Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856295 | Security lock for a room air conditioner | Richard D. Lang | 1989-08-15 |
| 4800735 | Fan motor assembly method and apparatus for a room air conditioner | Richard D. Lang | 1989-01-31 |