The Church of Jesus Christ of Latter-day Saints (the "Mormon" church) was officially founded in 1830. However, members of the Church believe that their religion is the same as that practiced in The Bible, clear down to Adam and Eve, so some Mormons might say that the Mormons have always been in existance!
As long as cows have been in existence, or the whole Bos primigenius species and subspecies have been in existence.
Helium is has been in existence since the beginning of the universe.
they have been in existence for 110 years since 1901.
The IUPAC has been in existence since 1919. (93 years ago.)
long time
October 1920
since 1992
they have been here forever
88 years
The saxophone was patented in 1846.
1909
1956