发明授权
US4729902A Animal and fowl feed supplement and process of manufacture 失效
动物和家禽饲料补充和制造过程

Animal and fowl feed supplement and process of manufacture
摘要:
An improved method and resulting animal and fowl feed supplement involving the impregnation of diatomaceous earth with a blood serum to provide a food supplement at a reasonable cost from slaughterhouse blood.
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