 Kodachrome 16mm movie film was released for sale in 1935, and in 1936 Kodachrome 35mm still (KS perforations) and 8mm movie film were released.Later, after the development of Kodachrome Commercial (an intentionally low-contrast film intended for later duplication), this film was made available on an exclusive basis to Technicolor, with BH perforations, and which immediately renamed it "Technicolor Monopack" (note, especially, the capital letter in ""M"onopack", which asserted that this was a proprietary process, although this name was never actually registered in the USPTO), and this single-strip three-color camera film remained available exclusively through Technicolor (with processing exclusively through Kodak's own labs) until the Eastman Color negative-positive process completely replaced Three-strip Technicolor after 1954.Mannes returned to music after inventing the Kodachrome film and process, performing as a pianist and composing several musical scores.