Gerhard Preisendorfer

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Heusenstamm, DE

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Patents Grantslast 30 patents

Information Patent Grant
Connector seal comprising rachet teeth
- Patent number 7,918,486
- Issue date Apr 5, 2011
- Rehau AG & Co.
- Gerhard Preisendörfer
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Seal construction in bell and spigot type concrete pipe connection
- Patent number 4,871,180
- Issue date Oct 3, 1989
- Gerhard H. Preisendorfer
- B28 - WORKING CEMENT, CLAY, OR STONE

Patents Applicationslast 30 patents

Information Patent Application
Connector seal comprising rachet teeth
- Publication number 20070108763
- Publication date May 17, 2007
- Rehau AG & Co.
- Gerhard Preisendorfer
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...