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METHOD. The mode of operating or the means of attaining an object.
2. It has been questioned whether the method of making a thing can be patented. But it has been considered that a method or mode may be the subject of a patent, because, when the object of two patents or effects to be produced is essentially the same, they may both be valid, if the modes of attaining the desired effect are essentially different. Dav. Pat. Cas. 290; 2 B. & Ald. 350; 2 H. Bl. 492; 8 T. R. 106; 4 Burr. 2397; Gods. on Pat. 85; Perpigna, Manuel des Inventeurs, &c., c. 1, sect. 5, Sec. 1, p. 22.