Memorial Day was originally known as Decoration Day, holiday started by the Grand Army of the Republic, an organization of Union Veterans of the Civil War to remember their deceased comrades in arms by decorating their graves. The first Decoration Day was celebrated May 30, 1868, and by 1890, the holiday had been adopted by all of the former Union States.
The earliest mention of Decoration Day in the patent literature is US489218 from 1893 on a Floral Figure, which can be placed on graves “on Decoration Day or other occasions.”
As time passed “Memorial Day” began to replace “Decoration Day” as the day became a day to honor all fallen American soldiers, and not just those from the Civil War. In 1949, Plant Patent 875 used the terms interchangeably, noting that the subject Geranium plant would bloom “a hundred percent prerectly for Memorial Day” and later that it “easily comes into bloom for Decoration Day.”.
In 1958, U.S. Patent No. 2,857,507,disclosed an Electric Lawn Ornament that could be used on Decoration Day:
In 1968 the Uniform Monday Holiday Act codified the name “Memorial Day” into law, and the first Memorial Day was celebrated in 1971.
U.S. Patent No. 5,435,099 covers a Memorial-Stone-Attached Container useful for flowers.
U.S. Patent No. 7,059,082 covers a Memorial Vase Insert Artificial Flower and Helium Balloon Holder that can be used to celebrate Memorial Day.