Bernd Schmidt Fig. 11 Self Propelled Anti-Aircraft

This tank is one of many tanks from a patent by Bernd Schmidt. This is one of the vehicles described under Fig. 11. It is a rear turreted anti aircraft Vehicle. There is no official name so in this post will call it the Bernd Schmidt Fig. 11.
Variants:

1.
Name: Bernd Schmidt Fig.  11
Type: Self Propelled Anti-Aircraft
Origin: Germany
Year: 1969
Produced: 0

Length: 6.8 Meters
Width: 3.2 Meters
Height: ~1.2 Meters (basic hull)
Weight: ???
Speed: 70 km/h

Crew: 1 to 2 in the hull

Primary Armament:
-20 mm AA Canon (2) OR
-40 mm AA Canon (2)
Secondary Armament:
-Machine Gun

Gun Flexibility: ???°

Armor:
???

Sources:
http://ftr.wot-news.com/2015/01/20/patently-absurd-special-a-very-german-family/