TREA

Martinus J. M. de Graaf

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  • Veldhoven, NL
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Patents Grantslast 30 patents

  • Information Patent Grant

    Direct effect master/stamper for optical recording
    • Patent number 5,188,863
    • Issue date Feb 23, 1993
    • E. I. Du Pont de Nemours and Company
    • Martinus J. M. de Graaf
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL