Rogers vs. Abbot, &c.
“Upon a motion for an injunction to restrain the defendant from making and vending the plaintiff’s improvement for which he had obtained a patent, the court required the plaintiff to subjoin to his bill a special affidavit of the truth of the allegations of the same; and that he is, to the best of his knowledge and belief, the true and original inventor and discoverer of the improvement for which he had obtained his patent; and that the same had not, to his knowledge or belief been in use, or been described in any public work, anterior to his said invention and discovery.