Paul Christiaan van Hal

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Amsterdam, NL

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Patents Applicationslast 30 patents

Information Patent Application
Solid coated coil and a method of coating a coil
- Publication number 20070000131
- Publication date Jan 4, 2007
- Sonion Nederland BV
- Mattheus Willem Klootwijk
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method for fixing a diaphragm in an electroacoustic transducer
- Publication number 20060230598
- Publication date Oct 19, 2006
- Wilmink Engbert
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Electroacoustic transducer with a diaphragm and method for fixing a...
- Publication number 20050111688
- Publication date May 26, 2005
- Engbert Wilmink
- H04 - ELECTRIC COMMUNICATION TECHNIQUE