PAPER CLIP The design is perfect. There's been little improvement since Norwegian Johan Vaaler got his American patent in 1901. Only about 20% are actually used to clip papers.
POST-IT One of the top five best-selling office supplies. To make Post-its, introduced in 1980, 3M had to develop the adhesive, primer, backside coating and new manufacturing equipment
TELEVISION A Russian-born American scientist, Vladimir K. Zworykin, demonstrated the first practical TV in 1929. But it took RCA, which owned NBC, 10 years before making the first national broadcast and producing its first line of TVs. In 1951 (the year I Love Lucy...
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