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Carrying house keys is so 2012. It's 2019, folks, and there's no reason that you should still be living in the stone age. Smart locks are fantastic ways to add connectivity to your front door, but ...
Walter Schlage had already secured several patents dating back to 1909, when he patented a doorknob that would also complete an electrical circuit so that, for instance, the lights would turn on when the door was opened. [4] However, Schlage's key invention was the bored cylindrical lock, which evolved through several iterations, including a ...
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His first patent was in 1909, inventing a door lock that turned lights on and off. [1] At the time, Schlage was a citizen of Germany residing in Berkeley, California. [2] In 1919, Schlage patented a door knob which, when pushed up, locked the door. [3] [4] This was succeeded by a door knob incorporating a push-button lock, patented in 1924. [5]
Some commercially-sold doors may come prepared to receive one or more bored cylindrical locks, such as entry doors, which typically require both a door knob and dead bolt. [ 2 ] In the United States, typically, the face bore is sized from 1.5 to 2.125 inches (3.81 to 5.40 cm) in diameter and is centered at 2.375 or 2.75 inches (6.03 or 6.99 cm ...
Google on Monday removed derogatory reviews about McDonald's after the suspect in the killing of UnitedHealth executive Brian Thompson was arrested at its restaurant in Altoona, Pennsylvania ...
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