| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 2 | |
| #2 | United States | 2 | |
| #3 | Argentina | 1 | |
| #4 | Denmark | 1 | |
| #5 | United Kingdom | 1 | |
| #6 | Iceland | 1 | |
| #7 | Italy | 1 | |
| #8 | Japan | 1 | |
| #9 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Consumer goods | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones | |
| #2 | Sound-producing devices | |
| #3 | General building constructions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bertagni Jose Juan | 5 |
| #2 | Jiyose Jiyuan Berutaguni | 1 |
| #3 | Juan Bertagni Jose | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JPS54134620A | Flat diaphragm attachment for acoustic converter | |
| US3596733A | Flat diaphragm for sound transducers and method for manufacturing it | |
| GB923776A | Prefabricated house building |