ALLEN, Circuit Judge.
This is an appeal from a decree which held Claim 1 of Van Wormer Patent 1,947,748, for a paper cleaning machine, not infringed by appellee. The patent was issued to appellant February 20, 1934, and subsequently modified by a disclaimer filed September 26, 1938. As originally issued, Claim 1, which is the only claim in issue, read as follows:
"A paper cleaning machine comprising a casing, means to move thin paper web into, across and out...
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