TREA

Michael B. Zekich

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  • Pasadena, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Security system for selectively allowing passage from a non-secure...
    • Patent number 4,586,441
    • Issue date May 6, 1986
    • Related Energy & Security Systems, Inc.
    • Michael B. Zekich
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Revolving door system
    • Patent number 4,530,183
    • Issue date Jul 23, 1985
    • Heise Manufacturing Co., Inc.
    • Stanley R. Heise
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Revolving door system
    • Patent number 4,475,308
    • Issue date Oct 9, 1984
    • Heise Manufacturing Co., Inc.
    • Stanley R. Heise
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Revolving door system
    • Patent number 4,458,447
    • Issue date Jul 10, 1984
    • Heise Manufacturing Co., Inc.
    • Stanley R. Heise
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES