MR. CHIEF JUSTICE WAITE delivered the opinion of the court.
In order that we may proceed intelligently in our inquiries as to the validity of the patent presented for our consideration in this case, it is important to ascertain at the outset what it is that has been patented.
Looking to the original patent, issued Nov. 13, 1855, we find the invention is there described as consisting "of an improvement in refrigerators, whereby the whole of the contained air...
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