Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8296877 | Futon with nesting platform members | Joel Grossman, Howard Porter | 2012-10-30 |
| 7861333 | Frames for futon sofa beds and methods of securing slats therein | Joel Grossman, Howard Porter | 2011-01-04 |