Hermann-Josef Stolberg

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Birkesdorf, DT

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Patents Grantslast 30 patents

Information Patent Grant
Slide valve for closing a large pressurized gas conveying pipe
- Patent number 4,018,420
- Issue date Apr 19, 1977
- Hermann Rappold & Co. GmbH
- Rudolf Muller
- C21 - METALLURGY OF IRON
Information Patent Grant
Shutoff and control slide
- Patent number 3,970,109
- Issue date Jul 20, 1976
- Hermann Rappold & Co. GmbH
- Johannes Uerlichs
- C21 - METALLURGY OF IRON