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Method for etching
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Patent number 7,115,212
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Issue date Oct 3, 2006
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Feldman Technology Corporation
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Douglas McLean
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C03 - GLASS MINERAL OR SLAG WOOL
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Etched metal oxide film
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Patent number 6,749,766
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Issue date Jun 15, 2004
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Feldman Technology Corporation
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Douglas McLean
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C03 - GLASS MINERAL OR SLAG WOOL
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Method for etching
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Patent number 6,193,901
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Issue date Feb 27, 2001
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Feldman Technology Corporation
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Douglas McLean
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Method for etching
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Patent number 6,180,021
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Issue date Jan 30, 2001
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Feldman Technology Corporation
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Douglas McLean
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Method for etching
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Patent number 6,174,452
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Issue date Jan 16, 2001
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Feldman Technology Corporation
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Douglas McLean
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Transparent electrodes
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Patent number 5,986,391
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Issue date Nov 16, 1999
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Feldman Technology Corporation
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Bernard Feldman
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H01 - BASIC ELECTRIC ELEMENTS
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Method for etching
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Patent number 5,976,396
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Issue date Nov 2, 1999
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Feldman Technology Corporation
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Douglas McLean
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES