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3917125
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Patent number 3,917,125
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Issue date Nov 4, 1975
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C30 - CRYSTAL GROWTH
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3902860
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Patent number 3,902,860
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Issue date Sep 2, 1975
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C30 - CRYSTAL GROWTH
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3902454
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Patent number 3,902,454
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Issue date Sep 2, 1975
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C30 - CRYSTAL GROWTH
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3899371
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Patent number 3,899,371
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Issue date Aug 12, 1975
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C30 - CRYSTAL GROWTH
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3897281
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Patent number 3,897,281
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Issue date Jul 29, 1975
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C30 - CRYSTAL GROWTH
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3893875
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Patent number 3,893,875
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Issue date Jul 8, 1975
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C30 - CRYSTAL GROWTH
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3891478
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Patent number 3,891,478
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Issue date Jun 24, 1975
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C30 - CRYSTAL GROWTH
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3880680
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Patent number 3,880,680
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Issue date Apr 29, 1975
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C30 - CRYSTAL GROWTH
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3858551
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Patent number 3,858,551
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Issue date Jan 7, 1975
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C30 - CRYSTAL GROWTH