This will guide the process you'll use to apply for the patent. 4. File a provisional patent application. This offers a layer of protection in case someone later claims they had the idea before you did. As Issie Lapowsky points out, U.S patent law is a first-to-file system, not first-to-invent.
Ancient River Valley Civilizations Introduction. The term civilization separates cultures that were more developed and settled than the previous hunter-gatherer societies. The first civilizations arose around 4000 BC in four river valleys across the globe. This unit is designed to examine the rise of these early civilizations and the emerging social complexity of populous societies.
A river civilization or river culture is an agricultural nation or civilization situated beside (and often drawing sustenance from) a river. Historically the first great civilizations all grew up in river valleys. The oldest, 3500 to 2000 B.C.E., was along the Tigris and Euphrates rivers in the Middle East; the name given to that civilization, Mesopotamia, means between the rivers.