| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Italy | 3 | |
| #2 | United States | 2 | |
| #3 | Germany | 1 | |
| #4 | Spain | 1 | |
| #5 | France | 1 | |
| #6 | Japan | 1 | |
| #7 | Netherlands | 1 | |
| #8 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications | |
| #2 | Electrical machinery and energy | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Telephonic communication | |
| #2 | Unspecified technologies | |
| #3 | Dynamo-electric machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Baldoni Carlo | 4 |
| #2 | Karuro Barudoni | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES450119A1 | Keyboard decade digital dial | |
| IT1062576B | Telephone receiver numerical push button dial - has printed circuit boards to which normal telephone connections can be made | |
| IT1067109B | Telephone receiver numerical push button dial - has printed circuit boards to which normal telephone connections can be made | |
| US3949617A | Electromechanical speed variator |