When was the clock radio invented?

In the mid-1970s, while I was a teenager, I was thrilled to get a clock radio.  It meant that I could wake to music and news.    I don't remember for sure, but I think that I got up between 6:30 to 7:00 to catch a roughly 7:30 to 7:45 bus, which traveled less than 2 miles, and I was in class by 8:00.  As I recall, our school got out some time between 3:00 and 3:30.

"The first radio alarm clock was reportedly invented in the 1940s by James F. Reynolds and Paul L. Schroth Sr. While these inventors are credited, the origins of the clock radio are somewhat unclear, with no official U.S. Patent Office record. The Sony Dream Machine, released in 1968, is considered a notable early example of a clock radio featuring a snooze button and AM/FM radio. 
Elaboration:
Early Inventors:
James F. Reynolds and Paul L. Schroth Sr. are widely credited with the invention of the first radio alarm clock in the 1940s. 
Lack of Official Record:
The exact details of the clock radio's invention are not documented in the U.S. Patent Office, leaving some ambiguity about the precise timeline. 
Early Models:
While Reynolds and Schroth are credited, the exact models they invented are not widely documented. The Sony Dream Machine, released in 1968, is considered a landmark clock radio. 
Evolution:
Early clock radios were large and heavy, but they evolved into more compact and portable models, including those with digital displays and additional features like smartphone charging stations. "
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