Major types of positive-displacement pumps include: 1  Roots. 2  Lysholm twin-screw. 3  Sliding vane. 4  Scroll-type supercharger, also known as the G-Lader.
I believe that the first Reich refers to the establishment of the Holy Roman Empire in the 9th century was Charles the Great. The Second Reich was the unification of Germany under the Prussian Kaiser Wilhelm II in 1870. Of course, we all know what the Third Reich was. The First Reich was the Holy Roman Empire. There is little agreement as to when it was founded. Most German historians date the foundation from the coronation of Otto I in 962. That 'empire' had a continuous existence till 1806. The Second Reich was created by Bismarck in 1871 and lasted till 1918.
The Reichsmark (helpÂ·info) (sign: ââ³) was the currency in Germany from 1924 until 20 June 1948 and in Austria from 1938 to 1945. The Reichsmark was subdivided into 100 Reichspfennig. The Mark is an ancient Germanic weight measure, traditionally a half pound, later used for several coins.