RT Journal Article SR Electronic A1 Friedmann, Alberto T1 Cinematographic Technology and Patents. Notes for Critical Analysis JF Iluminace YR 2007 VO 19 IS 4 SP 61 OP 75 UL https://iluminace.cz/en/artkey/ilu-200704-0005.php AB The article analyses in detail the situation of Italian cinematographic technology, development and inventions from the beginnings of cinema to the end of the 1940s, focusing on the years 1920-1934, while trying to find the causes of this situation.