| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 3 | |
| #2 | Sweden | 2 | |
| #3 | Australia | 1 | |
| #4 | Brazil | 1 | |
| #5 | Canada | 1 | |
| #6 | Switzerland | 1 | |
| #7 | Germany | 1 | |
| #8 | France | 1 | |
| #9 | Israel | 1 | |
| #10 | Italy | 1 | |
| #11 | Netherlands | 1 | |
| #12 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Telecommunications |
| # | Technology | |
|---|---|---|
| #1 | Telephonic communication |
| # | Name | Total Patents |
|---|---|---|
| #1 | Feil T E | 3 |
| #2 | Feil Thomas E | 2 |
| #3 | Thomas Ellwood Feil | 1 |
| #4 | Braunstein Marcel | 1 |
| #5 | Feil T | 1 |
| #6 | Hauser Craig | 1 |
| #7 | Feil Thomas Ellwood | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB8507412D0 | Multi-line telephone communications system | |
| IT1078731B | Telephone switching system with contacts for standard lines - has press button switches for relay coils and display giving line number | |
| IL48641D0 | Multi station telephone switching system |