STONE, Circuit Judge.
This is an action for infringement of two method claims (claims 1 and 2) of Patent No. 1,262,860, issued to Samuel B. Smith covering method and apparatus claims for an egg incubator. From a decree determining infringement, this appeal is brought by defendants. The issues here are invalidity of these claims and noninfringement, if valid.
I. Validity.
This patent has been frequently litigated. It has been held valid by every court...
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