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Porter Chemical Company was an American toy manufacturer that developed and produced chemistry sets aimed as educational toys for aspiring junior scientists. The company's Chemcraft kits were first sold at major retail by Woodward & Lothrop , and appeared soon after at other retailers in the country.
Although Porter and Gilbert were the largest American producers of chemistry sets, other manufacturers such as the Skilcraft corporation were also active. [5] John J. Porter and his brother Harold Mitchell Porter began The Porter Chemical Company in 1914. Their initial purpose was to sell packaged chemicals, but they soon introduced kits.
Materials for use in vacuum are materials that show very low rates of outgassing in vacuum and, where applicable, are tolerant to bake-out temperatures. The requirements grow increasingly stringent with the desired degree of vacuum to be achieved in the vacuum chamber. The materials can produce gas by several mechanisms.
"Love for Sale" is a song by Cole Porter introduced by Kathryn Crawford in the musical The New Yorkers, which opened on Broadway on December 8, 1930, and closed in May 1931 after 168 performances. [1]
Jake Vernon Haven Porter (August 3, 1916 – March 25, 1993) was an American jazz trumpeter and record producer. Born in Oakland, California , Porter started playing violin at age seven and switched to cornet at nine.