Operation Paperclip was a secret United States intelligence program in which more than 1,600 German scientists, engineers, and technicians were taken from the former Nazi Germany to the U.S. for government employment after the end of World War II in Europe, between 1945 and 1959. Wikipedia
Start date: July 20, 1945
End date: 1959
Yes, as I later noted, and as I pointed it, they were not recruited to help at the CIA. The CIA was not taken over by NAZIS via operation paperclip.