Sergey Andreevich Volchonkov

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St.Petersburg, RU

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Patents Grantslast 30 patents

Information Patent Grant
Device for cleaning water wells
- Patent number 9,988,877
- Issue date Jun 5, 2018
- Ventora Technologies AG
- Anna Vladimirovna Abramova
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
DEVICE FOR CLEANING WATER WELLS
- Publication number 20160076340
- Publication date Mar 17, 2016
- VENTORA TECHNOLOGIES AG
- Anna Vladimirovna Abramova
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL