Helmut Grassl

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Traunstein, DE

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Patents Grantslast 30 patents

Information Patent Grant
Ventilating and evacuating valve for conduit pipes and/or braces
- Patent number 9,222,590
- Issue date Dec 29, 2015
- HAWLE Armaturen GmbH
- Helmut Grassl
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Airing and venting elements for pipes and fittings
- Patent number 7,921,868
- Issue date Apr 12, 2011
- HAWLE Armaturen GmbH
- Stefan Goetzinger
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
Ventilating and evacuating valve for conduit pipes and/or braces
- Publication number 20140060670
- Publication date Mar 6, 2014
- Helmut Grassl
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
CASING FOR A VENTILATING AND EVACUATING VALVE FOR PIPE LINES AND/OR...
- Publication number 20090026406
- Publication date Jan 29, 2009
- HAWLE Armaturen GmbH
- Helmut Grassl
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
AIRING AND VENTING ELEMENTS FOR PIPES AND FITTINGS
- Publication number 20080276994
- Publication date Nov 13, 2008
- HAWLE Armaturen GmbH
- Stefan Goetzinger
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...