There are several reported routes of transmission of the rabies virus. Rabies is most often transmitted through a bite from an infected animal. Less frequently, it can be passed on when the saliva of an infected animal enters another animalâs body through mucous membranes or an open, fresh wound.
Eli Whitney invented a cotton gin. It was an improvement on the roller gins of the time in that it separated seeds from fibers faster and more easily. But his greater achievement was, arguably, the development of interchangeable parts.
Whitney did not patent any aspect of his interchangeable parts work, which goes back to his difficulties with the cotton gin. His working model of the machine was stolen, and broadly duplicated; and he found that his patent, for all the pride in brought him, was practically unenforceable. So he chose trade-secret protections instead.