Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6412599 | Loading-dispersing device for portable non-free-standing ladders | John G. Thompson | 2002-07-02 |
| 6021865 | Load-dispersing device for portable non-free-standing ladders | John G. Thompson | 2000-02-08 |
| 5740857 | Heat Recovery and storage system | John G. Thompson | 1998-04-21 |