| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 3 | |
| #2 | Switzerland | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Canada | 2 | |
| #5 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications |
| # | Technology | |
|---|---|---|
| #1 | Selecting | |
| #2 | Telephonic communication |
| # | Name | Total Patents |
|---|---|---|
| #1 | Peticky Josef | 13 |
| #2 | Cizek Ivan | 8 |
| #3 | Suchanek Frantisek | 5 |
| #4 | Suchanek Franz | 4 |
| #5 | Cizek Jvan | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA132673A | Telephone exchange | |
| CA131997A | Telephone exchange | |
| GB190525826A | Improvements in and relating to Means for Automatically Connecting Up the Subscribers of Telephone Exchanges to each other. | |
| US1047833A | Apparatus for automatically connecting up the subscribers of telephone-exchanges. | |
| GB190428036A | Means for Automatically Connecting Up with each other the Subscribers to Telephone Exchanges. | |
| US1053864A | Automatic telephone-exchange system. |