SWEENEY, Chief Judge.
This a patent infringement action involving a gravity dispensing valve assembly for use with floor treating apparatus. The patent in suit, No. 2,990,979, granted July 4, 1961, was issued to the plaintiff on an application filed by R. G. Harrison and Joseph W. Manning. The defendant denies infringement and challenges the validity of the patent.
Findings of Fact
The plaintiff, a Massachusetts corporation, is engaged in...
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