Small clocks made with coiled wire made an appearance.
The clock was patented
The first clock was invented and patented by Eli Terry.
Period: to
history of the clock
Salespeople for the R.W. Sears Watch Company fan out across America selling affordable timepieces. The firm is later renamed Sears, Roebuck and Co.
A second is formally defined as 9,192,631,770 vibrations of the cesium atom. For the first time, time is not defined by the movement of astronomical bodies.
Time is more popular than ever: about half-a-billion watches are sold each year.