| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 5 | |
| #2 | United States | 5 | |
| #3 | France | 3 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Machines | |
| #3 | Electrical machinery and energy | |
| #4 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones | |
| #2 | Unspecified technologies | |
| #3 | Casings and printed circuits | |
| #4 | Unspecified technologies | |
| #5 | Electric discharge tubes | |
| #6 | Spectacles |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hanson Harvey E | 4 |
| #2 | Sam Posen | 4 |
| #3 | Posen Sam | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2522266A | Magnetic receiver | |
| US2495546A | Hearing aid chassis | |
| US2495476A | Wearable electronic hearing aid having a unitary casing for the batteries and the amplifier | |
| US2431198A | Base structure for miniature electron tubes | |
| US2482288A | Wearable electronic hearing aid having the amplifier and the batteries contained in a common casing |