Istvan Zsoka

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Budapest, HU

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Patents Grantslast 30 patents

Information Patent Grant
Packer for separation of zones in a well bore
- Patent number 4,499,947
- Issue date Feb 19, 1985
- Magyar Szenhidrogenipari Kutatofejleszto Intezet
- Istvan Zsoka
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus for carrying out underground measurements during drilling...
- Patent number 3,991,610
- Issue date Nov 16, 1976
- Koolaj-Es Foldgazbanyaszati Ipari Kutato Laboratorium
- Geza Rakar
- E21 - EARTH DRILLING MINING