MARKEY, Chief Judge.
Appeal from four judgments of the U.S. District Court for the District of Massachusetts holding that claims 1, 4, 6, 7, 12 and 16 of U.S. Patent 3,181,461 issued to Fromson are not infringed or contributorily infringed. We vacate and remand.
BACKGROUND
A. The Technology
The Fromson patent involves a process for making a photographic printing plate for use in the art of lithography. The art involves creation on...
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