Who had an explosive idea and first patented DYNAMITE?
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1) For over 500 years, paper was only available and sold as single sheets. In 1902, an inventive Australian used half size sheets of paper, a bit of glue and cardboard to create the what?
2) In which decade was the transistor invented?
3) In which decade was the telephone invented?
4) What invention was first installed at a Hartford, Connecticut bank in 1889?
5) In which year was MIDI introduced?