substantial equivalent of patented device

substantial equivalent of patented device
Same as thing itself, so that if two devices do same work in substantially same way, and accomplish substantially same results, they are equivalent, even though differing in name, form, or shape. Bedell v. Dictograph Products Co., 251 App.Div. 243, 296 N.Y.S. 25, 32; Freeman v. Altvater, C.C.A.Mo., 66 F.2d 506, 511

Black's law dictionary. . 1990.

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