| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 2 | |
| #2 | Canada | 2 | |
| #3 | Switzerland | 2 | |
| #4 | Germany | 2 | |
| #5 | Spain | 2 | |
| #6 | France | 2 | |
| #7 | United Kingdom | 2 | |
| #8 | Netherlands | 2 | |
| #9 | United States | 2 | |
| #10 | Italy | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones |
| # | Name | Total Patents |
|---|---|---|
| #1 | Allison Roy Frederick | 4 |
| #2 | Allison Roy F | 4 |
| #3 | Allison Wayland Mass | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4029910A | Wide dispersion loudspeaker with flexing diaphragm | |
| AU8036575A | Loudspeaker | |
| US3983333A | Loud speaker system | |
| AU7827275A | Loudspeaker system |