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3903055
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3836565
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Patent number 3,836,565
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Patent number 3,832,334
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Patent number 3,825,580
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C07 - ORGANIC CHEMISTRY
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3699076
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Patent number 3,699,076
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3663501
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Patent number 3,663,501
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Issue date May 16, 1972
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3652635
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Patent number 3,652,635
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C07 - ORGANIC CHEMISTRY
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Patent number 3,590,069
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C07 - ORGANIC CHEMISTRY
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3562311
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Patent number 3,562,311
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C07 - ORGANIC CHEMISTRY
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Patent number 3,541,186
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Issue date Nov 17, 1970
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Patent number 3,532,674
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Issue date Oct 6, 1970
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C07 - ORGANIC CHEMISTRY
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3451977
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Patent number 3,451,977
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Patent number 3,361,722
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Issue date Jan 2, 1968
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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B32 - LAYERED PRODUCTS
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3260637
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