Blaine "mr. hollywood" where are the documents showing that the Redrock, Sgpro, Letus and Brevis are copy written? The movie tube has copyright documents freely on their site. Of course we know that the Indian products are not, but lets prove a point you're trying to make about copyright laws. There are threads and threads here and over at dvinfo about copyright laws, pertaining to this particular subject. Seeing how am not a lawyer and have very limited knowledge when it comes to copyright infringement, I won't get my feet too wet here. The only product I have seen that has any type of papers showing its owns the right to their product was Cine Dof with the leaf springs design.
First, we're discussing patents, which is different from copyright. And second, what's the point you're trying to make here? All of the manufacturers you mentioned have patented their design or are getting it patented. Indeed, Letus even stated on their site that the technology used to flip the image is proprietary.