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Related to heart-lung machine: Cardiopulmonary bypass machine
MACHINE. A contrivance which serves to apply or regulate moving power; or it
is a tool more or less complicated, which is used to render useful natural
instruments, Clef. des Lois Rom. h.t.
2. The act of congress gives to inventors the right to obtain a patent right for any new and useful improvement on any art, machine, manufacture, &c. Act of congress, July 4, 1836, s. 6. See Pet. C. C. 394; 3 Wash. C. C. 443; 1 Wash. C. C. 108; 1 Wash. C. C. 168; 1 Mason, 447; Paine, 300; 4 Wash. C. C. 538; 1 How. U. S., 202; S. C. 17 Pet. 228; 2 McLean, 176.