HASTINGS, Circuit Judge.
Elbert Leach appeals from an adverse judgment entered June 29, 1967, following a bench trial, in his patent infringement action against appellee Rockwood & Co. The trial court held the patent in suit invalid and not infringed.
The patent in suit, Patent No. 2,580,306, was issued to appellant and others December 25, 1951 and covers an automatic silo unloader. Nine of the patent claims were involved in the suit and all were held...
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