Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10167995 | Portable item holder having an elongate void extending between two openings for receiving the item | Douglas M. Sheffield | 2019-01-01 |
| 8308118 | Portable item holder having an appendage connector and method for using the holder | Douglas M. Sheffield | 2012-11-13 |
| 7740221 | Suction-mountable display device having a periphery and a bend adjacent the periphery | Douglas M. Sheffield | 2010-06-22 |
| 7641167 | Portable item holder, display device, and aromatic device | Douglas M. Sheffield | 2010-01-05 |
| RE40244 | Vacuum actuated display ornaments | Douglas M. Sheffield | 2008-04-15 |
| 6136392 | Vacuum actuated display ornaments | Douglas M. Sheffield | 2000-10-24 |
| 5714215 | Unitary flexible information presentation board having self-suction | Douglas M. Sheffield | 1998-02-03 |