Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7474186 | Quantitative measurement of production and consumption of gases in power transformers | — | 2009-01-06 |
| 7122075 | Device for reducing the gas and water contamination of transformer oil filling | — | 2006-10-17 |
| 4680091 | Apparatus for the continuous vacuum cleaning of oil | Bohuslav Beran | 1987-07-14 |
| 4561866 | Apparatus for vacuum cleaning of oil fillings | Jaromir Ratislav | 1985-12-31 |
| 4292259 | Arrangement for sucking-off gases | Zdenek Roth | 1981-09-29 |
| 4202367 | Circuit arrangement for regulating the level of liquid in vessels | Zdenek Roth | 1980-05-13 |