What was one technique that Biograph,as part of the Patents Company group,used to maintain rigid control of the early movie-making industry?

Question

Quizplus · Accepted Answer

Biograph, as part of the Patents Company group, implemented strict control over the early movie-making industry by keeping the names of the actors in its films secret. This prevented other studios from poaching their successful actors and ensured that Biograph had a certain level of exclusivity over their films.

What Was One Technique That Biograph,as Part of the Patents