From Appendices A4/6 and A6/6: Albert Fono was a mechanical engineer who obtained his diploma in 1903 from the Technical University of Budapest.

-In the 1930's, he has made a design of an aerial torpedo driven by a jet propulsion engine, that is, a kind of missile, ahead of its time.

-Albert Fonó was a physicist who was born in 1881 and designed a ramjet as early as 1915.

“Fonó's first design”

“The 1928 projects”