ALSCHULER, Circuit Judge (after stating the facts as above).
We refer thus fully to this Hayde patent to indicate its scope, and what was in fact claimed for it, and to preface the statement that nowhere in Hayde's specification or claims is there reference to an expanded or porous product, or one which would result in a materially lighter aggregate for concrete than the ordinary gravel, sand, and crushed rock aggregate.
In the Patent Office this Hayde patent...
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