MR. JUSTICE BLATCHFORD delivered the opinion of the court.
This suit is brought on letters-patent No. 67,046, granted to Joseph L. Hall, the appellant, July 23, 1867, for an "improvement in connecting doors and casings of safes." The only claim alleged to have been infringed is claim 3, which is in these words: "3. The conical or tapering arbors, 1, in combination with two or more plates of metal, in the doors and casings of safes and other secure receptacles, the...
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