June 13th 1877
Alexander Cartwright invented baseball.
Abner Doubleday
Abner Doubleday
because there are four bases and a ball
Squidward Tentacles
Who invented the dishwasher since this day
24 hours a day usually.
Alexander Cartwright
no
Oakland, California
1953
Taking for granted that you mean United Sates as National, Inventor's Day is celebrated on February 11, according to Senate Joint Resolution 140 (Public Law 97 - 198). It is the anniversary of birth of the inventor Thomas Alva Edison, that had over 1,000 patents in the U.S.