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Heat strengthened glass
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Patent number 4,759,788
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Issue date Jul 26, 1988
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Pilkington Brothers P.L.C.
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Peter Ward
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C03 - GLASS MINERAL OR SLAG WOOL
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Thermally toughening glass
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Patent number 4,511,384
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Issue date Apr 16, 1985
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Pilkington Brothers P.L.C.
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John Evason
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C03 - GLASS MINERAL OR SLAG WOOL
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Thermally toughening glass
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Patent number 4,494,972
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Issue date Jan 22, 1985
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Pilkington Brothers P.L.C.
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Brian Marsh
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C03 - GLASS MINERAL OR SLAG WOOL
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Thermal toughening of glass
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Patent number 4,205,976
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Issue date Jun 3, 1980
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Pilkington Brothers Limited
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Peter Ward
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C03 - GLASS MINERAL OR SLAG WOOL