Firma Ernst Grob

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Mannedorf, CH

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for fabricating precision teeth
- Patent number 4,388,818
- Issue date Jun 21, 1983
- Firma Ernst Grob
- Hans Krapfenbauer
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Cold rolling method and cold rolling apparatus
- Patent number 4,307,592
- Issue date Dec 29, 1981
- Firma Ernst Grob
- Hans Krapfenbauer
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...