sgeorges4 said:R4M and panzerblitz for dora and friedrich,what is Nachrüstung?
sgeorges4 said:what if I guess?
sgeorges4 said:that all we get about this project?
richard B said:Here , copies of the patent , from a French book published many (30,40 ?? )years ago .
On one corner , I can read "PA 15576" , on another "Siebel".
I don't know more about this patent ... ...