Heinz Witschi

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3073 Gumligen, Berne, CH

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Patents Grantslast 30 patents

Information Patent Grant
Element moulding of metal mesh
- Patent number 4,506,481
- Issue date Mar 26, 1985
- Heinz Witschi
- E04 - BUILDING
Information Patent Grant
Device for connecting a structure with a wall to be poured with con...
- Patent number 4,338,757
- Issue date Jul 13, 1982
- Heinz Witschi
- E04 - BUILDING