Technological and industrial history of 20th-century Canada engineer, George de Mestral, velcro, a two sided fastening technology based on hooks and loops, was introduced to a number of countries, including Canada, in the late 1950s. In Montreal, Velek Ltd. acquired the exclusive marketing rights for velcro in North and South America and Japan. The format for sound recordings changed in the years just following the war. In the US, Columbia Records introduced the long playing (LP) 33 format in 1948. Columbia made an agreement with Sparton Records, of London, Ontario, established in 1930, for the manufacture and distribution of its LP records in Canada. Not to be
Swiss-system tournament "Round Robin", usually start with the Swiss system to make sure that the same teams would not play against each other frequently, but in the last one or two rounds there is a switch to the Danish system, especially to allow the first two ranked teams to battle against each other for the victory, even if they have met before during the tournament. In a few tournaments which run over a long period of time, such as a tournament with one round every week for three months, the Grand Prix system can be used. A player's final score is based