Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6621909 | Horn loudspeaker and loudspeaker systems | William Webb, Paul Darlington | 2003-09-16 |
| 4270056 | Undershot current motor | — | 1981-05-26 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6621909 | Horn loudspeaker and loudspeaker systems | William Webb, Paul Darlington | 2003-09-16 |
| 4270056 | Undershot current motor | — | 1981-05-26 |