Siemen Roelof Van Der Heide

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Rotterdam, NL

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for the internal inspection of pipes and tubes and the like
- Patent number 6,978,690
- Issue date Dec 27, 2005
- A. Hak Industrial Services B.V.
- Siemen Roelof Van der Heide
- G01 - MEASURING TESTING
Information Patent Grant
Ultrasonic measuring instrument
- Patent number 6,295,872
- Issue date Oct 2, 2001
- A Hak Industrial Services B.V.
- Siemen Roelof Van Der Heide
- G10 - MUSICAL INSTRUMENTS ACOUSTICS