Where anticipation is based on inevitable result (the General Tire principle), the inevitable result must encompass every integer of the claim; it is impermissible to establish some integers by inevitable result and others by reference to the understanding of the skilled addressee. It is not necessary that the skilled addressee at the priority date could practically obtain the materials needed to work the anticipating process. In assessing manner of manufacture, the court is confined to what appears on the face of the specification; advantages and explanations in the body of the specification cannot supply the quality of newness or inventiveness to the claims.
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