Egbert Helmig

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Ennigerloh, DE

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Patents Grantslast 30 patents

Information Patent Grant
Sealing device
- Patent number 6,913,266
- Issue date Jul 5, 2005
- Hammelmann Maschinenfabrik GmbH
- Michael Jarchau
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Device for cleaning an inner pipe inserted into a gas or oil produc...
- Patent number 6,840,315
- Issue date Jan 11, 2005
- Hammelmann Maschinenfabrik
- Michael Jarchau
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
SEALING DEVICE FOR A ROD
- Publication number 20240255057
- Publication date Aug 1, 2024
- HAMMELMANN GMBH
- Egbert HELMIG
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Device for cleaning an inner pipe inserted into a gas or oil produc...
- Publication number 20040016540
- Publication date Jan 29, 2004
- Michael Jarchau
- E21 - EARTH DRILLING MINING
Information Patent Application
Sealing device
- Publication number 20030189296
- Publication date Oct 9, 2003
- Michael Jarchau
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...