[1] In Cincinnati Bell Foundry Co. v. Dodds, 19 Wkly. Law Bul. (Ohio) 84, Judge Taft said:
“Tlie property in a secret process is tlio power to make use of it to the exclusion of the world. If the world knows the process, then the property disappears. There can be no property in a process, and no right of protection, if knowledge of it is common to the world. It would be a violation of every right of "an employé of a manufacturer to prevent the former from using, in a business of bis own, knowledge which he acquired in the employ of the latter when he might have acquired such knowledge in the employ of other manufacturers. Indeed, a contract not to do so would probably fail of enforcement because in restraint of trade.”
To grant to the complainant the exclusive use of a form of machine in common use, like, for instance, the disc joiner, the center boring machine, or any machine used for cutting or smoothing by means of gluing sandpaper to a metallic surface, would foster monopoly and exclude others from the use of well-known and much-used prior devices. To entitle it to protection against the use of its machines and methods of manufacture by others, it must appear that they are in fact secret, for, as said in Hopkins on Trade-Marks, 226:
“In every case where the plaintiff seeks protection for a trade secret, it must appear that it really is a secret. If a so-called secret process is lawfully known to others in the trade, no one will be enjoined from disclosing or using it.”
See, also, Cincinnati Bell Foundry Co. v. Dodds.
So, too, to enforce on the individual defendants the duty of preserving the secrets, if any, pertaining to the complainant’s business, it must be shown that they knew that its methods of manufacture and machines were in fact secret.
In the Cincinnati Bell Foundry Co. Case, supra, the rule is thus stated :
“If there was a secret and he came to know it because he was foreman and had to know it that it might be used, and Knew that it was a secret,* then I am inclined to think that his obligation to preserve such secret as the property of his employer must be implied, even though nothing was said to him on the subject.”
In Westervelt v. National Paper, etc., Co., 154 Ind. 673, 678, 57 N. E. 552, it was said:
“If a person employs another to w.ork for him in a business in which he makes use of a secret process, or of machinery invented by himself, or by others for him, but the nature and particulars oB which he desires to keep a secret, and of which desire on the part of the employer the employé has notice at the time of his employment, even if there is no express contract on the part of the employé not to divulge said secret process or machinery, the law will imply a promise to keep the employer’s secret thus intrusted to him.”
Considering all the facts and circumstances developed by the record, the complainant has not, within the rules of evidence, established that its machines and methods of work were in fact secret, or that the individual defendants knew or had cause to believe th*<t they were secret or intended to be held as such.
The Tubbs reglet machine is in such an exact similitude to the complainant’s that it is strongly urged that the blueprint from which the