I do not know if your query concerns all the world, but if you want you can
add Kety Nicolay (borne in Greece but Italian and Mario Angioy (who also
worked for a while under the pseudomin of Mr. Mari). She is the inventor of
'La conchiglia'...
Ask me the info you are eventually interested into.
Maria
Maria Antonietta Fontana Angioy
Evolver srl - La Conchiglia
Rome, Italy