Rainer J. Haas

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Cologne, DE

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Patents Grantslast 30 patents

Information Patent Grant
Electrodynamic loudspeaker having omnidirectional sound emission
- Patent number 4,665,550
- Issue date May 12, 1987
- Rainer J. Haas
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loudspeaker
- Patent number 4,488,010
- Issue date Dec 11, 1984
- Siegfried Klein
- H04 - ELECTRIC COMMUNICATION TECHNIQUE