Engelbarth was also one of the early Internet leaders. 1969, the first data transmission of ARPANET (the predecessor of the Internet) took place between the leonard kleinrock laboratory of UCLA and the Engelbath laboratory of Stanford University. Engelbass is a philosopher, scientist and inventor, but his most famous identity should be the father of mice. He applied for a mouse patent at 1970, but failed to get any benefits from this patent. This is mainly because his mouse patent expired in 1987, before the personal computer revolution. Engelbas, 83, is the head of the Bootstrap Institute.