Karlheinz Raetz

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Brunswick, DE

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Patents Grantslast 30 patents

Information Patent Grant
Sunlight collector
- Patent number 4,300,531
- Issue date Nov 17, 1981
- Karlheinz Raetz
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Mixture control device for service water installations having a low...
- Patent number 4,293,003
- Issue date Oct 6, 1981
- Karlheinz Raetz
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...