Johann Greven

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Aachen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Carriage drawing machine for uniformly drawing and longitudinally s...
- Patent number 4,182,150
- Issue date Jan 8, 1980
- Schumag Schumacher Metallwerke
- Johann Greven
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Eccentric cutters for longitudinally severing elongated material to...
- Patent number 4,162,642
- Issue date Jul 31, 1979
- SCHUMAG GmbH
- Johann Greven
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Carriage drawing machine for uniformly drawing elongated material t...
- Patent number 4,112,730
- Issue date Sep 12, 1978
- Schumag Schumacher Metallwerke Gesellschaft mit beschrankter Haftung
- Johann Greven
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...