Michael G. M. Steeman

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Castricum, NL

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Patents Grantslast 30 patents

Information Patent Grant
Cylindrical microphone having an electret assembly in the end cover
- Patent number 7,286,680
- Issue date Oct 23, 2007
- Sonion Nederland B.V.
- Michael G. M. Steeman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cylindrical microphone having an electret assembly in the end cover
- Patent number 7,062,058
- Issue date Jun 13, 2006
- Sonion Nederland B.V.
- Michael G. M. Steeman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Cylindrical microphone having an electret assembly in the end cover
- Publication number 20060215867
- Publication date Sep 28, 2006
- Sonion Nederland B.V.
- Michael G.M. Steeman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Cylindrical microphone having an electret assembly in the end cover
- Publication number 20020154790
- Publication date Oct 24, 2002
- Michael G. M. Steeman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE