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• Phonograph
  ...so in 1895 Berliner replaced the hard rubber used to make the discs with a shellac compound.<ref>{{cite web|title=the early gramophone|url=http://homepage.mac ...a [[shellac]] compound until the 78-rpm format was completely phased out. (Shellac records were heavier and more brittle.) 33s and 45s were, however, made exc
  115 KB (17,286 words) - 16:32, 16 December 2018
• Thomas Edison
  ...t]]. Other wartime products include [[xylene]], [[p-phenylenediamine]], [[shellac]], and [[pyrax]]. Wartime shortages made these ventures profitable. In 19
  105 KB (15,290 words) - 17:19, 16 December 2018