*provisionally Oppose any move not supported by regular/substantial contributors to the article.  There are clearly a number of ways in which an article like this can go.  Consider the parallel contents: 
 :*Timeline of United States discoveries 
 :*Timeline of United States inventions]] 
 :*Timeline of United States inventions (1890–1945)]] 
 :*Timeline of United States inventions (1946–91)]] 
 :*Timeline of United States inventions (after 1991)]] 
 :*Timeline of United States inventions (before 1890)]] 
 :There are a variety of possibilities presented in Category:Lists of inventions or discoveries.  I would suggest scrapping this RM and simply starting a thread by which editors might explore the possibilities.