ATWELL, Chief Judge.
Suit for Infringement.
The plaintiffs seek an injunction and damages against the defendants for alleged infringement of a patent No. 2,555,402, granted on June 5, 1951, to Field.
The defendants deny infringement, plead anticipation, and question the validity of the patent.
The patent relates to a housed opaque projector which does away with the outside pointed and affords an electric signal.
In passing upon the...
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