Ulrich Fruedenberg

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Grosssachsen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Ferrofluid seal for a shaft
- Patent number 5,092,611
- Issue date Mar 3, 1992
- Firma Carl Freudenberg
- Roland Ehmsen
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...