| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 2 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Electrical machinery and energy | |
| #3 | Telecommunications | |
| #4 | Optics | |
| #5 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lehr Philip N | 8 |
| #2 | Giller Ronald R | 2 |
| #3 | Idank Joseph A | 2 |
| #4 | George O'Brien | 1 |
| #5 | Gus Carlson | 1 |
| #6 | Richard Lupia | 1 |
| #7 | Adolf Reitlinger | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3448224A | Rigid in-the-ear hearing aid | |
| US3101155A | Compact housing | |
| US3159717A | Chime signal regulator | |
| US3072754A | Hearing aid device | |
| US2975244A | Carrier for ear level hearing aid | |
| US2975226A | Battery holder | |
| US2964725A | Miniature plug receptacle | |
| US2979575A | Communication system | |
| CA812054A | Rigid in-the-ear hearing aid | |
| CA688854A | Compact housing |