| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Basic communication technologies | |
| #2 | Telecommunications | |
| #3 | Machines | |
| #4 | Thermal processes | |
| #5 | Mechanical elements | |
| #6 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Tuning resonant circuits | |
| #2 | Transmission | |
| #3 | Gearing | |
| #4 | Books | |
| #5 | Producing ice | |
| #6 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sanford Alfred F | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US2004014A | Refrigerating apparatus | |
| US1695390A | Radio apparatus | |
| US1755028A | Radio apparatus | |
| US1619545A | Radio apparatus | |
| US1619544A | Radio apparatus | |
| US1710553A | Radio apparatus | |
| US1705999A | Radio apparatus | |
| US1691413A | Radio apparatus | |
| US1669575A | Radio station-finding mechanism | |
| US1632923A | Mechanism for converting motion | |
| US1689602A | Radio apparatus | |
| US702487A | Collection-form. |