Edison's team would sometimes have to invent the machinery they needed to make their innovations. These machines were meant for punching holes in phonographic records.
Click here to read the related story on Thomas Edison's labs. And click here to check out the entire Road Trip 2010 package.
July 7, 2010 4:00 AM PDT
Photo by: Daniel Terdiman/CNET
| Caption by: Daniel Terdiman
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