Timekeeping/Alarm Mechanisms
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Alarm Clock For the Deaf: US924127A — “Alarm-clock” — Hiram Phelps Arms — 1909
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Device for waking persons from sleep — Samuel S. Applegate — 1882
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US175344A — “Improvement in lighting attachments for alarm-clocks” — inventor as listed on patent — 1876
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US315603A — “Alarm-clock” — Walter D. Davies — 1885
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US538306A — “Alarm-clock” — inventor as listed on patent — 1895
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US900293A — “Alarm-clock” — inventor as listed on patent — 1908
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US924127A — “Alarm-clock” — Hiram Phelps Arms — 1909
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Showing all 7 results