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Johannes Jansen

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  • Buchenhain, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

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    • Patent number 4,210,294
    • Issue date Jul 1, 1980
    • Schloemann-Siemag Aktiengesellschaft
    • Johannes Jansen
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

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    • Patent number 4,205,560
    • Issue date Jun 3, 1980
    • Schloemann-Siemag AG
    • Johannes Jansen
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...