Bertram Johannes

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Unna-Billmerich, DE

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Patents Grantslast 30 patents

Information Patent Grant
Single-action freewheel clutch with substantially large central dia...
- Patent number 5,060,773
- Issue date Oct 29, 1991
- Hoesch Aktiengesellschaft
- Johannes Bertram
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Large roller bearing in the form of a wire bearing
- Patent number 4,863,294
- Issue date Sep 5, 1989
- Hoesch Aktiengesellschaft
- Johannes Bertram
- D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information Patent Grant
Center-free large antifriction bearing with integrated electrical d...
- Patent number 4,771,199
- Issue date Sep 13, 1988
- Hoesch Aktiengesellschaft
- Bertram Johannes
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...