1. That the offender is a person in charge, employee or workman
   of a manufacturing or industrial establishment;
2. That the manufacturing or industrial establishment has a secret
   of the industry which the offender has learned;
3. That the offender reveals such secrets; and
4. That prejudice is caused to the owner.

Prejudice is an essential element of this offense

Secrets must relate to manufacturing processes.

The act constituting the crime is revealing the secret of the
industry which the offender has learned.

The revelation of the secret might be made after the employee
or workman had ceased to be connected with the establishment.