WILBUR, Circuit Judge.
This is an action for infringement of the broad claims 6 and 8 of patent No. 1,917,261 for a method of retreading worn tire casings, issued to P. E. Hawkinson July 11, 1933 upon application filed May 14, 1931. The trial court held that claim 6 was invalid but that claim 8 was valid and infringed by the defendant. Both sides appeal.
This patent was considered by the Circuit Court of Appeals for the Eighth Circuit in Gamble Skogmo v. Hawkinson...
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