TREA

Hermann Riegert

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Patents Grantslast 30 patents

  • Information Patent Grant

    Coffee percolator
    • Patent number 4,993,315
    • Issue date Feb 19, 1991
    • WMF Wurttembergische Metallwarenfabrik AG
    • Siegfried Huber
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Coffee percolator for selectively making normal coffee or espresso
    • Patent number 4,583,449
    • Issue date Apr 22, 1986
    • Wurttembergische Metallwarenfabrik AG
    • Artur Dangel
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Insulated container
    • Patent number 4,446,978
    • Issue date May 8, 1984
    • Wurttemberische Metallwarenfabrik Aktiengesellschaft
    • Manfred Arndt
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Method of making knives
    • Patent number 4,147,918
    • Issue date Apr 3, 1979
    • Wurttembergische Metallwarenfabrik
    • Rolf Ritter
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...