Jan JORNA

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Port Elizabeth, ZA

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Patents Grantslast 30 patents

Information Patent Grant
Solar heat collecting device
- Patent number 9,903,615
- Issue date Feb 27, 2018
- AQUA FILTER (PTY) LTD
- Hans Helmut Hahn
- F28 - HEAT EXCHANGE IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
SOLAR HEAT COLLECTING DEVICE
- Publication number 20130008433
- Publication date Jan 10, 2013
- Hans Helmut HAHN
- F28 - HEAT EXCHANGE IN GENERAL