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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 ...
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]
Harbor Freight Tools, commonly referred to as Harbor Freight, is an American privately held tool and equipment retailer, headquartered in Calabasas, California. It operates a chain of retail stores, as well as an e-commerce business. The company employs over 28,000 people in the United States, [5] and has over 1,500 locations in 48 states. [6] [7]
One of the best post-Christmas sales we look forward to every year is Nordstrom's Half-Yearly Sale, which typically kicks off the day after Christmas and lasts for a couple of weeks.Ring in the ...
Editor’s Note: Examining clothes through the ages, Dress Codes is a new series investigating how the rules of fashion have influenced different cultural arenas — and your closet. Red velvet ...
In a trial featuring a mouse model of Alzheimer's, scientists found that inhaling a mixture containing xenon gas helped reduce levels of brain atrophy and neuroinflammation.