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Inventions by Mistake

All of these things were invented by mistake.

1. Peni­cillin

2. The Slinky

3. Wheaties

4. Post-it Notes

5. Plas­tic

6. Pace­maker

To find out how, go to http://smallbusiness.yahoo.com/advisor/9-brilliant-inventions-made-by-mistake.html

 

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