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2. Wind-up toy - Wikipedia

   en.wikipedia.org/wiki/Wind-up_toy

   The trend stopped with the introduction of the small and inexpensive Alkaline battery in the 1960s, which allowed motors to run without a wind-up mechanism. Over the next 20 years, wind-up toys lost popularity.

3. Telechron - Wikipedia

   en.wikipedia.org/wiki/Telechron

   The electric clock market grew rapidly in the 1930s, and Telechron's patented power interruption indicator gave his clocks an advantage over competing synchronous clocks, but by the 1950s battery-operated clocks that weren't dependent on the power grid took market share, and in the 1960s the quartz clock replaced synchronous clocks.

4. Clock - Wikipedia

   en.wikipedia.org/wiki/Clock

   The electric clock was patented in 1840, and electronic clocks were introduced in the 20th century, becoming widespread with the development of small battery-powered semiconductor devices. The timekeeping element in every modern clock is a harmonic oscillator, a physical object that vibrates or oscillates at a particular frequency. [2]

5. Skeleton clock - Wikipedia

   en.wikipedia.org/wiki/Skeleton_clock

   Unlike the 18th century skeleton clocks most of those contemporary timepieces are powered by the battery-operated quartz mechanism. The quartz movement used is a low cost, mass produced, plastic mechanism of no decorative value. It is disguised within the clock’s body therefore skeleton design is expressed in the open form of the clock face.

6. Kit-Cat Klock - Wikipedia

   en.wikipedia.org/wiki/Kit-Cat_Klock

   The words "Kit-Cat" were added to the clock's face in 1982. The original clocks were AC-powered, but due to scarcity of American-made AC motors, the clock was redesigned for battery power in the late 1980s. [3] The manufacturer estimates that an average of one clock has been sold every three minutes for the last 50 years. [4]

7. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!