MR. JUSTICE GRAY delivered the opinion of the court.
This is an appeal from a decree dismissing a bill in equity for the infringement of letters patent granted to the plaintiff January 22, 1884, for "improvements in lead-holders for pencils," which (omitting the drawings and the explanation of them) fully shows the invention claimed, and the form of lead-holders or lead-tubes previously in use and known to the patentee, as follows:
"The object of my present...
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