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Impregnation method
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Jörg Peter Schür
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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3147124
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Patent number 3,147,124
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Issue date Sep 1, 1964
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Patent number 2,900,257
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Issue date Aug 18, 1959
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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2566941
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Patent number 2,566,941
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Issue date Sep 4, 1951
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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2291632
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Patent number 2,291,632
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Issue date Aug 4, 1942
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Patent number 2,002,345
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Issue date May 21, 1935
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Patent number 1,910,195
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Issue date May 23, 1933
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES