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
Frog (fastening) became an important decorative feature on military uniforms from the 17th–19th centuries. This was particularly evident for prestigious regiments, especially cavalry or hussars, and gave rise to the German term for frogging in general, ''. These dolman jackets were tight-fitting and dominated by extensive frogging, often in luxurious materials such as gold, silver or brass metallic cording or brocades. The frogging was usually far more than was necessary for fastening. In some cases it even became non-functional, with a concealed opening beneath it and the original jacket opening becoming a false detail. By the later 19th century, for lower grade