Which of these revolutionary product design innovations was introduced to the market FIRST?

Throughout history, product innovation has transformed industries and daily life. Some innovations were so revolutionary they changed how we interact with technology forever. This trivia tests your knowledge of landmark product designs that broke conventions and created new standards in their industries. Can you identify which groundbreaking innovation came first?

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Dyson's bagless cyclone vacuum technology (1983)
Apple's click wheel interface on the iPod (2001)
Sony's Walkman portable cassette player (1979)
OXO's Good Grips ergonomic kitchen tools (1990)