Alfredo Hellemann

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Schongau, DE

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Patents Grantslast 30 patents

Information Patent Grant
Working cylinder, switch valve and pressure-actuated working unit
- Patent number 6,679,162
- Issue date Jan 20, 2004
- Hygrama AG
- Alfredo Hellemann
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Working cylinder, switch valve and pressure-actuated working unit
- Patent number 6,276,257
- Issue date Aug 21, 2001
- Hygrama AG
- Alfredo Hellemann
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Working cylinder, switch valve and pressure-actuated working unit
- Publication number 20010018860
- Publication date Sep 6, 2001
- Alfredo Hellemann
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC