TREA

Wallace A. Erickson

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  • Chicago, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Dental filling materials
    • Patent number 4,163,004
    • Issue date Jul 31, 1979
    • Wallace A. Erickson & Company
    • Wallace A. Erickson
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Whistle-cap device
    • Patent number 4,121,375
    • Issue date Oct 24, 1978
    • Wallace A. Erickson & Company
    • Wallace A. Erickson
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Child's toothbrush having a whistle
    • Patent number 4,001,909
    • Issue date Jan 11, 1977
    • Wallace A. Erickson Company
    • Wallace A. Erickson
    • A46 - BRUSHWARE