what inventions were made in the 1980s
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what inventions were made in the 1980s
what inventions were made in the 1920s
what inventions were made in the 1950s
what inventions were made in the 1990s
what inventions were made in the 1960s
what inventions were made in the 1980s, what inventions were made in the 1920s, what inventions were made in the 1950s, what inventions were made in the 1990s, what inventions were made in the 1960s