Ralf Briest

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Osterode, DE

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Patents Grantslast 30 patents

Information Patent Grant
Uninterruptible power supply (UPS) system with primary air cooling
- Patent number 6,424,057
- Issue date Jul 23, 2002
- Piller GmbH
- Hilmar Darrelmann
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
System for stabilizing a power supply system
- Patent number 6,023,152
- Issue date Feb 8, 2000
- Piller-GmbH
- Ralf Briest
- B30 - PRESSES