This power was used to raise money for the Crown, and was widely abused, as the Crown granted patents in respect of all sorts of common goods (salt, for example). Consequently, the Court began to limit the circumstances in which they could be granted. After public outcry, James I of England was forced to revoke all existing monopolies and declare that they were only to be used for "projects of new invention". This was incorporated into the 1624 Statute of Monopolies in which Parliament restricted the Crown's power explicitly so that the King could only issue letters patent to the inventors or introducers of original inventions for a fixed number of years. It also voided all existing monopolies and dispensations with the exception of: