Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7111897 | Travel trailer | Marion B. Johnson, Terry L. Harkins | 2006-09-26 |
| 6860545 | Travel trailer | Marion B. Johnson, Terry L. Harkins | 2005-03-01 |
| 6502894 | Travel trailer | Marion B. Johnson, Terry L. Harkins | 2003-01-07 |
| 6343830 | Travel trailer | Marion B. Johnson, Terry L. Harkins | 2002-02-05 |