Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6889796 | Loudspeaker suspension | Simon Yorick Pettman | 2005-05-10 |
| 6640925 | Loudspeaker diaphragm and method of manufacture thereof | Simon Yorick Pettman | 2003-11-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6889796 | Loudspeaker suspension | Simon Yorick Pettman | 2005-05-10 |
| 6640925 | Loudspeaker diaphragm and method of manufacture thereof | Simon Yorick Pettman | 2003-11-04 |