Frank H. Fleer did not invent bubblegum, however, Walter Diemer, an employee at the Fleer Corporation, Fleer's company, did, by accident. Bubblegum is pink because pink was the only dye he had near him. They can not make a chocolate flavored gum because chocolate makes it softer, which loses the whole point of bubblegum! :D
The exact date of when Benjamin Franklin invented the Swim Fins is unknown.
Richard T. James is credited with invented the popular children's toy, the slinky. He invented it with his wife sometime in the early to mid 1940's, but the exact year is not known.
The band aid was invented in 1920 by Earl Dickinson. The exact month and day in 1920 that he invented the Band-Aid is unknown.
There is no exact date associated with the invention of the wheeled cart. However, historians say it was invented in ancient China.
1960s, I don't think there was an exact year...
Although I could not find the exact date on when Henry Bell invented the first passenger steam boat service, I would say roughly around 1800-1820.
You do not invent a style of painting on any one day.
There is no exact year in which they were invented. The practice developed gradually through the 1940s and 1950s.
The exact date of when Benjamin Franklin invented the Swim Fins is unknown.
Richard T. James is credited with invented the popular children's toy, the slinky. He invented it with his wife sometime in the early to mid 1940's, but the exact year is not known.
Bubble tea was invented in Taiwan in the 1980s. It is not clear which exact tea shop came up with the beverage first, but the two most likely suspects are Chun Shui Tang teahouse and the Hanlin teahouse.
man invented fire in the cave man era by hitting rocks together and making a spark; the exact date is unknown
The exact date is not known for when John Wallis invented the number line. It is known, however, that it was between the years of 1700 and 1703.
The exact day is unknown. The year under armour was invented was 1982
He did not invent peanuts; he invented a large number of uses for peanuts, only some of them practical or cost effective. Carver was born sometime before 1864, but the exact date is undocumented. He was in his 50s when he began studying uses of the peanut, roughly betwen 1915 and 1923.
henry hudson died 1565
1982