Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6889797 | Multi-purpose headgear | John H. Cowgill | 2005-05-10 |
| D478711 | Novelty hat and megaphone | John H. Cowgill | 2003-08-26 |
| 6568504 | Multi purpose headgear | John H. Cowgill | 2003-05-27 |
| D456595 | Hat which can serve as a megaphone | John H. Cowgill | 2002-05-07 |
| 5729926 | Roll-up sign with removable batten | John H. Cowgill | 1998-03-24 |
| 5694711 | Sign with fanning framework | John H. Cowgill | 1997-12-09 |
| 5598654 | Sign with collapsible, fanning framework | John H. Cowgill | 1997-02-04 |
| 5551177 | Roll-up sign with collapsible, fanning framework | John H. Cowgill | 1996-09-03 |