The first prototypes were made in June 1941-May 1942.
The M6 Heavy Assault Tank was a prototypical tank built in WWII. It was a designed on the base chassis of the failed T1 Heavy tank. It was armed with a 90mm M10 cannon, had 130mm armor, and the original T1 chassis. The M6 was designed in response to the rise of the new Tiger and Panther tanks. However, it was bulky and unwieldy, with a huge silhouette, and as such was unsuited for combating the Tiger tank. It was never designated as a Super Heavy tank. Aside from the M6HT, no other tank was designated with the name "M6".
the tiger tank was one of the Germans most heavily armoured tanks
There is only one tank named the Tiger and that's the Panzer 6, the biggest panzer was the Panzer 8 Maus
There was only two tigers, the tiger 1, which was very powerful and armourd but slow. The king tiger, twice the power and armore, but was twice as slow. The Tiger 1 and Tiger 2 had the same top road speed. Go to Wikipedia for more info.
The tiger is six and the king tiger is seven Clarification: both the Tiger 1 and Tiger 2 (King Tiger) are designated Panzerkampfwagen VI (or panzer 6) the tiger 2 being designated Panzerkampfwagen VI Ausf.B Tiger II. I'm not sure what a Panzer 7 was.
The Tiger I tank stopped production in August 1944 and stopped usage in combat in May 1945. The Tiger II tank both stopped Production and usage in April 1945.
Germany.
Germany
1942
Tiger
yes
Esso which later became Exxon. The "Tiger in your tank" campaign was in the late 1960's.