MR. JUSTICE BRADLEY, after stating the facts, delivered the opinion of the court.
The main defence relied on by the counsel of the defence, on the demurrer, is, that it is apparent that the reissued patents numbered 4818 and 4819 are not for the same invention as that which was described in the original letters-patent numbered 50,617, for a portion of which they purport to be reissues.
It is apparent, they say, that the original patent was for a process, to...
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