Frithjof N. Mastrup

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Rancho Palos Verdes, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Concentric pulse tube expander with vacuum insulator
- Patent number 5,680,768
- Issue date Oct 28, 1997
- Hughes Electronics
- Alan A. Rattray
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...