Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D499020 | Drum box | Mark S. Izen, Alexander Webb, Michael Oppenheim, Gerard Helfrich | 2004-11-30 |
| D494060 | Drum box | Mark S. Izen, Alexander Webb, Michael Oppenheim | 2004-08-10 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D499020 | Drum box | Mark S. Izen, Alexander Webb, Michael Oppenheim, Gerard Helfrich | 2004-11-30 |
| D494060 | Drum box | Mark S. Izen, Alexander Webb, Michael Oppenheim | 2004-08-10 |