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Matthias Helfert

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  • Winnenden, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Window cleaning appliance
    • Patent number D874771
    • Issue date Feb 4, 2020
    • Alfred Kaercher SE & Co. KG
    • Michael Meyer
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Window cleaning appliance
    • Patent number D830026
    • Issue date Oct 2, 2018
    • Alfred Kaercher GmbH & Co. KG
    • Matthias Helfert
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Window cleaning appliance
    • Patent number D828665
    • Issue date Sep 11, 2018
    • Alfred Kaercher GmbH & Co. KG
    • Matthias Helfert
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Window cleaning appliance
    • Patent number D818231
    • Issue date May 15, 2018
    • Alfred Kaercher GmbH & Co. KG
    • Matthias Helfert
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Electric vacuum cleaner
    • Patent number D792040
    • Issue date Jul 11, 2017
    • Alfred Kaercher GmbH & Co. KG
    • Michael Meyer
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Electric vacuum cleaner
    • Patent number D791420
    • Issue date Jul 4, 2017
    • Alfred Kaercher GmbH & Co. KG
    • Michael Meyer
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Electric vacuum cleaner
    • Patent number D789633
    • Issue date Jun 13, 2017
    • Alfred Kaercher GmbH & Co. KG
    • Michael Meyer
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Vacuum cleaner
    • Patent number D789627
    • Issue date Jun 13, 2017
    • Alfred Kaercher GmbH & Co. KG
    • Matthias Helfert
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Window cleaning appliance
    • Patent number D769560
    • Issue date Oct 18, 2016
    • Alfred Kaercher GmbH & Co. KG
    • Matthias Helfert
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Mounting device for a window cleaning appliance
    • Patent number D729474
    • Issue date May 12, 2015
    • Alfred Kaercher GmbH & Co. KG
    • Matthias Helfert
    • D32 - Washing, cleaning, or drying machine