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D. E. Protzman

Mentioned in 1 analyzed podcast episode across 1 show

Appears On

Episode Appearances

I Can’t Sleep

I Can’t Sleep · Feb 18, 2026

Alarm Clocks | Calm Bedtime Reading for Sleep

Registered the earliest patent for a digital alarm clock on October 23, 1956 in the United States

Mechanical alarm clock design and bell mechanismsDigital alarm clock display technologies and patentsRadio-controlled and atomic clock synchronization
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