| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 7 | |
| #2 | United States | 3 | |
| #3 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Special musical instruments |
| # | Name | Total Patents |
|---|---|---|
| #1 | Della-Porta Clifford A | 2 |
| #2 | Della-Porta Clifford Anthony | 2 |
| #3 | Spenlove-Spenlove Peter J F B | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1583781A | Musical drums | |
| US4173917A | Musical drums | |
| GB1593252A | Musical drums | |
| GB1538145A | Bass drum pedal | |
| GB1446871A | Counter hoops for drums | |
| GB1453041A | Musical drum | |
| GB1418468A | Snare drum | |
| GB1435902A | Resonator shell |