Rainer Haake

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Berlin, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method to introduce a fill gas mixture into an electric light bulb,...
- Patent number 4,659,318
- Issue date Apr 21, 1987
- Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
- Axel Bunk
- H01 - BASIC ELECTRIC ELEMENTS