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De Macedo; Pedro Manoel Buarque
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Bethesda, MD, US
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Patent Grant
Method of producing a glass article having a graded refractive inde...
Patent number
4,302,231
Issue date
Nov 24, 1981
De Macedo; Pedro Manoel Buarque
Pedro B. Macedo
C03 - GLASS MINERAL OR SLAG WOOL
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