Trosa is a municipality in central Sweden, in the county of Södermanland. The municipality covers an area of 207.9 km². Of the total population of 10197, 5105 are male, and 5092 are female. The population density of the community is 49 inhabitants per km².
... is covered by US patents 3,726,146 (1973) and 5,353,655 (1994) by L.A. Mishler and US patent 5,800,311 (1998) by P.S.Chuang.
External links
www.gyrotwister.de ...