TREA

Atma-Sphere Music Systems, Inc.

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Organization

  • St. Paul, MN, US
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Amplifier and preamplifier circuit
    • Patent number 6,242,977
    • Issue date Jun 5, 2001
    • Atma-Sphere Music Systems, Inc.
    • Ralph R. Karsten
    • H03 - BASIC ELECTRONIC CIRCUITRY

Trademarklast 30 trademarks

  • Information Trademark

    78135876 - CIRCLOTRONIC
    • Serial number 78135876
    • Registration number 2711501
    • Filing date Jun 14, 2002
    • Atma-Sphere Music Systems, Inc.
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
  • Information Trademark

    75225413 - BALANCED DIFFERENTIAL DESIGN
    • Serial number 75225413
    • Registration number 2177974
    • Filing date Jan 13, 1997
    • Atma-Sphere Music Systems, Inc.
    • 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments