Meanwhile, Wankel continued his own work with the rotary piston engine, forming his own research establishment in Lindau, Germany, in the mid-1970s. In 1986, he sold the institute for 100 million Deutschmarks (around $41 million) to Daimler Benz, maker of the Mercedes.
The entry day to a Schengen country is the first day and the exit day is the last day of the stay. You must at any given time only have a maximum of 90 days stay in the Schengen region in any 180-day period.This is in other words a ârollingâ calculation by which the period of 180 days prior to each day of the stay are taken into account.ou must at any given time only have a maximum of 90 days stay in the Schengen region in any 180-day period. This is in other words a ârollingâ calculation by which the period of 180 days prior to each day of the stay are taken into account.
You will have to apply for a multiple entry Schengen visa, mentioning your travel plans in your covering letter (mention a few Schengen countries you intend to visit). If the visa authorities are convinced of the genuine need for a multiple visa you will be granted one.ith a multiple entry visa you are allowed multiple stays and visits to one or more Schengen countries. But the total length of stay of all visits combined should not be more than 90 days and the dates of the visits should be within the 180 day period from the date of the first entry into a Schengen country.