Christian Ragettli

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Zurich, CH

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Patents Grantslast 30 patents

Information Patent Grant
Method and an apparatus for cold-roll forming of annular workpieces
- Patent number 4,909,056
- Issue date Mar 20, 1990
- Christian Ragettli AG
- Christian Ragettli
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method and apparatus for bending pipes
- Patent number 4,352,281
- Issue date Oct 5, 1982
- Christian Ragettli
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Calibrating apparatus for inside and outside surfaces and alignment...
- Patent number 4,255,860
- Issue date Mar 17, 1981
- Christian Ragettli
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...