MARKEY, Chief Judge.
Consolidated appeal and cross appeal from a judgment of the United States District Court for the District of Massachusetts, declaring claims 1, 4, 6, 7, 12, and 16 of United States Patent No. 3,181,461 (the '461 patent) invalid and infringed. The judgment of invalidity is reversed; the judgment of infringement is affirmed.
Background
The art of lithography is premised on the immiscibility of greasy substances and water...
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