Transparent Ruler Co. v. C-Thru Ruler Co.

This action was based on unfair competition by the defendants in offering for sale and ad vertising articles bearing the number of a patent which belongs to the plaintiffs. The plaintiffs claimed an injunction, an accounting and damages. The court rendered judgment for the defendants and the plaintiffs have appealed.

Under the view which we take of the case, the salient facts in the court’s finding, which is subject to no material correction, may be thus summarized: The plaintiff Aronson is president of the plaintiff company, which sells rulers and measuring instruments made of transparent…