Minnesota Public Radio slideshow:
Introducing the Cleophone
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Dave Krejci stands over his invention. It seems inevitable that Krejci would develop something like the Cleophone. All his life he's tinkered with objects that emit sounds. (MPR photo/Chris Roberts)

Dave Krejci stands over his invention. It seems inevitable that Krejci would develop something like the Cleophone. All his life he's tinkered with objects that emit sounds.

(MPR photo/Chris Roberts)
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