| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 4 | |
| #2 | Denmark | 3 | |
| #3 | Switzerland | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Telecommunications |
| # | Technology | |
|---|---|---|
| #1 | Telephonic communication | |
| #2 | Advertising |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hinzpeter Alfred | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US1084012A | Device for calling cabs, porters, and the like by telephone. | |
| GB191213807A | An Improved Method of, and Apparatus for, Telephonically Ordering Cabs, Messengers and the like. | |
| GB191204818A | An Improved Automatic Card Exhibiting Device. | |
| US1039397A | Automatic exhibition device. |