Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811570 | Sleeve assembly with attached duct and drain connections for a through the wall air conditioning unit | John P. Thompson, Richmond S. Hayes, Jr. | 1989-03-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811570 | Sleeve assembly with attached duct and drain connections for a through the wall air conditioning unit | John P. Thompson, Richmond S. Hayes, Jr. | 1989-03-14 |