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Acidic polycyclic ether antibiotic
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Patent number 5,494,931
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Issue date Feb 27, 1996
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Pfizer Inc.
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Walter P. Cullen
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Acidic polycyclic ether antibiotic
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Patent number 5,418,152
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Issue date May 23, 1995
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Pfizer Inc.
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Walter P. Cullen
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Acidic polycyclic ether antibiotic
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Patent number 4,625,041
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Issue date Nov 25, 1986
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Pfizer Inc.
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Walter D. Celmer
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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