Heinz Petrak

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Nuremberg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Needle journal bearing for a magnetically supported rotor shaft of...
- Patent number 4,256,352
- Issue date Mar 17, 1981
- Siemens Aktiengesellschaft
- Heinz Petrak
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...