| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 9 | |
| #2 | United Kingdom | 3 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Measuring electric variables | |
| #2 | Electric switches | |
| #3 | Electric motor controls | |
| #4 | Measuring volume | |
| #5 | Emergency protective circuit arrangements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ciganek Jaromir | 2 |
| #2 | Kral Frantisek | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB714203A | Improvements in rotary meters | |
| GB667077A | An electromagnetic relay for impulse control | |
| GB667589A | Device for direct measurement of frequency |