Leopold Mannes died in 1964.
Leopold Mannes was born in 1899.
Mannes Francken died in 1948.
Clara Mannes died in 1948.
In the 1930's Kodachrome was invented by Leopold Godowsky, Jr. and Leopold Mannes, both professional musicians( "Kodachrome was made by God and Man")was a saying of the time
The slide projector was invented by Leopold Mannes and Leopold Godowsky in 1936. They were also known for their work on the first practical color photographic transparency film known as Kodachrome.
Marya Mannes died on September 13, 1990, in San Francisco, California, USA of series of strokes.
they developed a process whereby a single sheet of film is coated with three layers of emulsion each sensitive to of the primary colors of light otherwise know as kodachrome. and developed the color reveal film ektachrome
Mannes Francken was born in 1888.
Totte Mannes was born in 1933.
Aaron Mannes was born in 1970.
Clara Mannes was born in 1869.
Leopold Heder died in 1978.