The summary of the document is:
1. Growing meat in vitro was first proposed in 1931 by Winston Churchill and explored further in the 1950s and 1970s through publications and novels.
2. In the late 1990s and early 2000s, patents were filed for methods of producing cultured meat at an industrial scale.
3. Several organizations were founded in the 2000s to further the development of cultured meat, including New Harvest in 2004 and the Dutch in vitro meat project in 2005.