RAYFIEL, District Judge.
This action concerns plaintiff's Patent No. 2,146,237, claim 7 of which the defendant is charged with infringing. The patent covers a toy picture-projecting device.
The defendant denies
1. that the claim was duly and legally issued, and
2. that the claim is infringed, and contends
3. that the plaintiff is estopped from asserting the claim because it broadened its scope,
4. that the claim is invalid because...
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