Bernhard Bergmann

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Balsthal, CH

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for producing a composite pipe in a rotating drum
- Patent number 5,238,384
- Issue date Aug 24, 1993
- Von Roll AG
- Peter Hartmann
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Method for producing a composite pipe in a rotating drum
- Patent number 5,082,614
- Issue date Jan 21, 1992
- Peter Hartmann Beteiligungen AG
- Peter Hartmann
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Socket joint
- Patent number 4,648,633
- Issue date Mar 10, 1987
- Von Roll AG
- Bernhard Bergmann
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Mold-equipped casting oven unit for continuous rod castings
- Patent number 4,031,948
- Issue date Jun 28, 1977
- Von Roll AG
- Bernhard Bergmann
- B22 - CASTING POWDER METALLURGY