Centuries: 5th century - 6th century - 7th century
Decades: 510s - 520s - 530s - 540s - 550s - 560s - 570s - 580s - 590s - 600s - 610s
Years: 566 567 568 569 570 571 572 573 574 575 576
Births
Deaths
... 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 ...