Rui S
Sorry Donald, I didn't understand your question.
I think you wanted to know the following?
Porsche' s Tiger. ..
A revolutionary concept of the heavy tank of the combined
internal combustion-and-electric propulsion originated
at the Ferdinand Porsche' s recently organized
Nibelungenwerke AG industrial works (a filial of the
renown Steyr-Daimler-Puch AG) in St. Yalentin, Austria
in lale 1930s. First, in 1939, he launched his own
VK3001-program 30-tonne class prototype tank, called
officially the VK3001 (P). Factory names were Typ 100
and Leopard.

Donald Medley
I saw that later fill like a dumbass Sorry!