THE AMERICAN PATENT-LAW.
... Accordingly, in the first general Patent-Law passed by Congress, the subject for which Patents were to be granted were described as the invention or discovery of “any useful art, manufacture, engine, machine, or device, or any improvement therein not before known or used.” In the next statute—that of 21st February, 1793—the phraseology was first introduced which has been ever since employed—namely, “any new and useful art, machine, manufacture, or composition of matter, or any new and useful improvement in any art, machine, manufacture, or composition of matter, not known or used before the application for a Patent.”... We have, then, the following four heads of subjects suitable for Patents—viz., an art, a machine, a manufacture, and a composition of matter.... In England, to make a new process the subject of a Patent, the word “manufacture” would be used, and would have to be interpreted somewhat liberally. Thus, in some cases, there might not be a perfect distinction between the thing itself and the art or process of making the thing.... With regard to the head “manufacture,” we cannot do better than give the definition which Mr. Curtis has added as a note to his work. He says a manufacture “would be any new combination of old materials, constituting a new result or production in the form of a vendible article, not being machinery.”...
As well as from the following extract from—