The origins of the clock radio are unknown, and the U.S. Patent Office has no record of it on file. Culling the Internet results in the same conclusion. Here's what we think we know: James F. Reynolds and Paul L. Schroth Sr. invented the clock radio sometime during the 1940s. According to Answers.com, Reynolds' grandson says Granddad created the clock radio because "the alarm quit working on his windup clock ... so he rigged the key on the back of the clock to the volume knob on the radio. When the alarm started going off, the key would spin around and turn the volume up on the radio."
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