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Takashi Hagiwara

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  • Zama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Multiline slot machine
    • Patent number 4,838,552
    • Issue date Jun 13, 1989
    • Sigma Enterprises, Incorporated
    • Takashi Hagiwara
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    Slot machine
    • Patent number 4,805,907
    • Issue date Feb 21, 1989
    • Sigma Enterprises, Incorporated
    • Takashi Hagiwara
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    Control device for game machine
    • Patent number 4,679,143
    • Issue date Jul 7, 1987
    • Sigma Enterprises, Inc.
    • Takashi Hagiwara
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    Optoelectronic coin entry sensing system for coin operated machines
    • Patent number 4,565,275
    • Issue date Jan 21, 1986
    • Sigma Enterprises Incorporated
    • Takashi Hagiwara
    • G07 - CHECKING-DEVICES