MR. JUSTICE BRADLEY delivered the opinion of the court.
This is a suit in equity, instituted in the Supreme Court of the District of Columbia for injunction and relief against an alleged infringement of various patents belonging to the complainants. The bill was dismissed, and the complainants have appealed.
The patents sued on are six in number, originally five, granted to the appellant Cochrane on the 13th of January, 1863, and numbered respectively 37,317...
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