Ralf Hoffmann

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Sontheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Single-based incadescent lamp construction
- Patent number 5,453,655
- Issue date Sep 26, 1995
- Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen mbH
- Peter Helbig
- H01 - BASIC ELECTRIC ELEMENTS