Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5471774 | Lowerable changeable message and maintenance sign | James Close | 1995-12-05 |
| 5471775 | Outdoor pull-down display sign for use with existing outdoor signs | William Thornton | 1995-12-05 |
| 5054219 | Revolving sign and related drive | James Close | 1991-10-08 |
| 4517809 | Energy conservation system for heating and cooling of structures | — | 1985-05-21 |