| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 14 | |
| #2 | Germany | 7 | |
| #3 | United Kingdom | 3 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Electrophonic musical instruments | |
| #2 | Electric switches | |
| #3 | Dynamo-electric machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Maitre Alcide-Hector | 14 |
| #2 | Martin Victor-Henri-Gaston | 10 |
| #3 | Martin Victor-Henri | 4 |
| Publication | Filing date | Title |
|---|---|---|
| GB204320A | Keyboard musical instrument with electromagnetic operation | |
| GB196274A | Damping device for switch contacts for electro-magnetic vibrating members | |
| GB178438A | Damping device for switch contacts for electro-magnetic vibrating members |