Friedhelm Schlawne

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Kerpen-Sindorf, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method of detecting discontinuities on elongated workpieces
- Patent number 6,843,131
- Issue date Jan 18, 2005
- Mannesmannröhren
- Alfred Graff
- G01 - MEASURING TESTING
Information Patent Grant
Process and device for detecting flaws on stretched workpieces, esp...
- Patent number 5,679,898
- Issue date Oct 21, 1997
- Mannesmann Aktiengesellschaft
- Friedhelm Schlawne
- G01 - MEASURING TESTING
Information Patent Grant
Electrodynamic transducer head
- Patent number 5,050,703
- Issue date Sep 24, 1991
- Mannesmann Aktiengesellschaft
- Alfred Graff
- G01 - MEASURING TESTING
Information Patent Grant
Defect detection in cylindrical objects
- Patent number 4,817,431
- Issue date Apr 4, 1989
- Mannesmann AG
- Friedhelm Schlawne
- G01 - MEASURING TESTING
Information Patent Grant
Electrodynamically producing ultrasonic waves
- Patent number 4,732,040
- Issue date Mar 22, 1988
- Mannesmann AG
- Wolfgang Boettger
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Method of detecting discontiuities on elongated workpieces
- Publication number 20030233879
- Publication date Dec 25, 2003
- MANNESMANNROHREN-WERKE AG
- Alfred Graff
- G01 - MEASURING TESTING