Thomas Edison formed the Motion Picture Patents Company[?], with goals of controlling production and distribution, raising theater admission prices, cooperating with censorship bodies, and preventing film stock from getting into the hands of nonmember producers.
... is covered by US patents 3,726,146 (1973) and 5,353,655 (1994) by L.A. Mishler and US patent 5,800,311 (1998) by P.S.Chuang.
External links
www.gyrotwister.de ...