Friedrich Kupfer

4 Patents

• US122333692025

  Air Filter Element Having a Circumferentially Protruding Clean Air Seal, Filter Housing and Air Filter

  MANN+HUMMEL GmbH

  0 cites
• US120707072024

  Filter Element, Housing for a Filter System, and Filter System Comprising a Filter Element and a Housing

  MANN+HUMMEL GmbH

  0 cites
• US120647212024

  Filter Element and Method for Manufacturing a Filter Element

  MANN+HUMMEL GmbH

  0 cites
• US119594432024

  Filter Element and Filter System Having a Filter Element

  MANN+HUMMEL GmbH

  0 cites