| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 7 | |
| #2 | Austria | 4 | |
| #3 | Germany | 4 | |
| #4 | Canada | 1 | |
| #5 | Spain | 1 | |
| #6 | United Kingdom | 1 | |
| #7 | Italy | 1 | |
| #8 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic communication technologies | |
| #2 | Audio-visual technology | |
| #3 | Computer technology |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones | |
| #2 | Amplifiers | |
| #3 | Amplification control | |
| #4 | Analogue computers | |
| #5 | Casings and printed circuits |
| # | Name | Total Patents |
|---|---|---|
| #1 | Heinz Rueegg | 3 |
| #2 | Rueegg Heinz | 2 |
| #3 | Ruegg Heinz | 1 |
| #4 | Alfred Ruegg Heinz | 1 |
| #5 | Erhard Hiller | 1 |
| #6 | Hiller Erhard | 1 |
| #7 | Schweingruber Kurt | 1 |
| #8 | Hansruedi Steiner | 1 |
| #9 | Steiner Hansruedi | 1 |
| #10 | Kurt Schweingruber | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES417912A2 | Amplifier for deaf hearing aids with electroactical transformer connected to the same. (Machine-translation by Google Translate, not legally binding) | |
| CH552329A | RADIO RECEIVER BUILT IN A HOUSEHOLD DEVICE. | |
| CA981785A | Hearing aid | |
| US3875349A | Hearing aid |