| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 5 | |
| #2 | United States | 3 | |
| #3 | Switzerland | 2 | |
| #4 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Computer technology | |
| #2 | Textiles and paper | |
| #3 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Typewriters | |
| #2 | Electric digital data processing | |
| #3 | Display controls | |
| #4 | Static stores | |
| #5 | Data recognition and presentation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stantchev Ivan Tenev | 3 |
| #2 | Hristova Snejanka Vladimirova | 2 |
| #3 | Angelov Stefan Hristov | 2 |
| #4 | Bakardjiev Stefan Todorov | 2 |
| #5 | Ivan Tenev Stantchev | 2 |
| #6 | Srebev Srebryu Yovtchev | 1 |
| #7 | Hristova Vladimirova | 1 |
| #8 | Antonov Lubomir Iordanov | 1 |
| #9 | Srebrev Srebryn Yovtchev | 1 |
| #10 | Stephan Todorov Bakardjiev | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1219818A | A printing device for two-coloured mechanical impression, controlled by electric pulses | |
| GB1205788A | Electric circuits for carrying in, holding, processing and indication of the decimal point, especially in electronic calculators | |
| GB1196298A | Electric Circuit for Performing the Operation 'Multiplication', Especially in Electronic Calculators | |
| GB1154954A | A Printing Device | |
| FR1511575A | Ferrite memory, especially for electronic calculators |