Have seen Societe Nationale des Explosifs Brandt and Societe Nouvelle des Establishments Edgar Brandt, which...if either...is correct? (Of course neither is correct, since I didn't put the correct diacritical marks, but you get the idea)
BTW the text claims that Brandt had invented the shaped charge and passed it secretly to the allies after the invasion of France, resulting in the production of Bazooka. Wonder if anyone has more info on this?
Henry Mohaupt is credited (Ref. 74) with bringing the lined shaped charge technology to
the United States on 18 October 1940 and demonstrations were made to the U.S. Army
Ordnance Department occurred shortly after. The demonstrations were well received and
quickly led to the development of a 2.36-inch rifle grenade. Through an evolutionary
process, the grenade was soon provided with a rocket propulsion device which soon became
known in the U.S. Army as the "Bazooka."
Mohaupt continues in the 1966 published article:
"...by request of the French Government after the outbreak of World War II,
demonstration firings with antitank projectiles and 100 mm beehive demolition
charges were then conducted at Bourges Proving Ground. The penetration of these
charges had been further improved by the use of very precise cones and by the use
of cast main charges composed of mixtures of...(Pentolitc)...and similar cast charges
containing Hexogen (RDX) and TNT ...the French Government authorized immedi-
ate quantity production of these antitank projectiles by the Establishments E. E.
Brandt ...However the rapid deterioration of the military situation put an end to the
program and the French Governmeny authorized the release of the secret information to
the United States Government...In 1940, a French representative, Col. P. Delalande,
and (Mohaupt) were requested to proceed to the United States for this purpose..."