TREA

Eduard W. Tietjens

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  • Drachten, NL
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Patents Grantslast 30 patents

  • Information Patent Grant

    Cutting unit for a shaving apparatus
    • Patent number 4,998,352
    • Issue date Mar 12, 1991
    • U.S. Philips Corp.
    • Eduard W. Tietjens
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Shaving apparatus
    • Patent number 4,894,912
    • Issue date Jan 23, 1990
    • U.S. Philips Corp.
    • Eduard W. Tietjens
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Dry-shaving apparatus
    • Patent number 4,882,840
    • Issue date Nov 28, 1989
    • U.S. Philips Corp.
    • Eduard W. Tietjens
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Dry-shaving apparatus
    • Patent number 4,811,484
    • Issue date Mar 14, 1989
    • U.S. Philips Corp.
    • Willem S. Wijma
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Dry-shaving apparatus with self adjusting blades
    • Patent number 4,811,483
    • Issue date Mar 14, 1989
    • U.S. Philips Corp.
    • Eppe Bakker
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Dry shaving apparatus
    • Patent number 4,802,281
    • Issue date Feb 7, 1989
    • U.S. Philips Corp.
    • Eduard W. Tietjens
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Shaving apparatus
    • Patent number 4,707,923
    • Issue date Nov 24, 1987
    • U.S. Philips Corporation
    • Eduard W. Tietjens
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Hair-cutting device
    • Patent number 4,577,408
    • Issue date Mar 25, 1986
    • U.S. Philips Corporation
    • Eduard W. Tietjens
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Shaving apparatus
    • Patent number 4,510,687
    • Issue date Apr 16, 1985
    • U.S. Philips Corporation
    • Gerrit J. Groothuis
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Shaving apparatus
    • Patent number 4,424,628
    • Issue date Jan 10, 1984
    • U.S. Philips Corporation
    • Gerrit J. Groothuis
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Shaving apparatus
    • Patent number 4,347,662
    • Issue date Sep 7, 1982
    • U.S. Philips Corporation
    • Eduard W. Tietjens
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Shaving apparatus
    • Patent number 4,310,968
    • Issue date Jan 19, 1982
    • U.S. Philips Corporation
    • Dirk A. Buik
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Cutting unit for a dry-shaving apparatus
    • Patent number 4,283,849
    • Issue date Aug 18, 1981
    • U.S. Philips Corporation
    • Manfred Engelhardt
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Shaving apparatus
    • Patent number 4,275,497
    • Issue date Jun 30, 1981
    • U.S. Philips Corporation
    • Manfred Engelhardt
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Shaving apparatus
    • Patent number 4,272,884
    • Issue date Jun 16, 1981
    • U.S. Philips Corporation
    • Eduard W. Tietjens
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Shaving apparatus with lead cutter
    • Patent number 4,261,101
    • Issue date Apr 14, 1981
    • U.S. Philips Corporation
    • Eduard W. Tietjens
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Shaving apparatus
    • Patent number 4,240,199
    • Issue date Dec 23, 1980
    • U.S. Philips Corporation
    • Ebbe Boiten
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Shaving apparatus
    • Patent number 4,222,168
    • Issue date Sep 16, 1980
    • U.S. Philips Corporation
    • Ebbe Boiten
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Shaving apparatus
    • Patent number 4,192,065
    • Issue date Mar 11, 1980
    • U.S. Philips Corporation
    • Eduard W. Tietjens
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Dry-shaving apparatus with hair-pulling lead cutters
    • Patent number 4,151,645
    • Issue date May 1, 1979
    • U.S. Philips Corporation
    • Eduard W. Tietjens
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Shaving apparatus with a holder for a cutting element
    • Patent number 4,044,463
    • Issue date Aug 30, 1977
    • U.S. Philips Corporation
    • Eduard Willem Tietjens
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Dry-shaving apparatus
    • Patent number 3,962,784
    • Issue date Jun 15, 1976
    • U.S. Philips Corporation
    • Eduard Willem Tietjens
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING