Patent model
On July 31, 1790 inventor Samuel Hopkins of Pittsford, Vermont became the first person to be issued a patent in the United States. His patented invention was an improvement in the "making of Pot Ash by a new apparatus & process." These earliest patent law required that a working model of each invention be produced in miniature.
Land patent
The first United States land patent was issued on March 4, 1788, to John Martin. That patent reserves to the United States one third of all gold, silver, lead and copper within the claimed land.
Usage restrictions (e.g., oil and mineral rights, roadways, ditches and canals) placed on the land are spelled out in the patent. Such private property rights can also be thereafter negotiated in accord with the terms of private contracts. The rights inherent in patented land are carried from heir to heir, heir to assignee, or assignee to assignee, and cannot be changed except by private contract (warranty deed, quitclaim deed, etc.). In most cases, the law of a particular piece of patented land will be governed by the Congressional Act or treaty under which it was acquired, or by terms spelled out in the patent. For example, in the United States the laws governing the land may involve the Homestead Act or reservations placed on the face of the patent, or the Treaty of Guadalupe Hidalgo, which governs certain jurisdictional dicta relating to large amounts of land in California and adjoining territories.