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The first Royal vacuum cleaners were made by the P.A. Geier Company in 1905, establishing Royal as the oldest vacuum cleaner manufacturing company in the world. Mr. Geier started producing his metal cleaners by hand in a backyard garage in Cleveland, Ohio.

In 1937, Royal moved to a new location on East 105th Street and introduced the industry's first hand-held vac, the "Royal Prince." The company continued making vacuum cleaners until World War II, when it joined the war effort to make military goods.

Today, Royal enjoys more than 98 percent brand name awareness in the Dirt Devil brand name. Royal’s line of products with the Dirt Devil brand name include uprights, stick vacs, canister vacs, hand vacs, and carpet shampooers. These products are sold through major retailers nationwide.

In May of 2003, Royal Appliance Mfg. Co. was acquired by Techtronic Industries Co., Ltd though it is still headquartered in Ohio.

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