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3505025
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Patent number 3,505,025
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Issue date Apr 7, 1970
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C30 - CRYSTAL GROWTH
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3346344
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Patent number 3,346,344
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Issue date Oct 10, 1967
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C30 - CRYSTAL GROWTH
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3268301
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Patent number 3,268,301
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Issue date Aug 23, 1966
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C30 - CRYSTAL GROWTH
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3086857
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Patent number 3,086,857
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Issue date Apr 23, 1963
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C30 - CRYSTAL GROWTH
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3058915
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Patent number 3,058,915
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Issue date Oct 16, 1962
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C30 - CRYSTAL GROWTH
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2999776
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Patent number 2,999,776
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Issue date Sep 12, 1961
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C30 - CRYSTAL GROWTH
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2842467
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Patent number 2,842,467
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Issue date Jul 8, 1958
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C30 - CRYSTAL GROWTH