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Joseph John O'Connell (1861–1959), U.S. – number of inventions relating to telephony and electrical engineering; Theophil Wilgodt Odhner (1845–1903), Sweden/Russia – the Odhner Arithmometer, a mechanical calculator; Paul Offit (born 1951), U.S., along with Fred Clark and Stanley Plotkin, invented a pentavalent Rotavirus vaccine
The 100 known most prolific inventors based on worldwide utility patents are shown in the following table. While in many cases this is the number of utility patents granted by the United States Patent and Trademark Office, it may include utility patents granted by other countries, as noted by the source references for an inventor.
A timeline of United States inventions (1890–1945) encompasses the innovative advancements of the United States within a historical context, dating from the Progressive Era to the end of World War II, which have been achieved by inventors who are either native-born or naturalized citizens of the United States.
A timeline of United States inventions (after 1991) encompasses the ingenuity and innovative advancements of the United States within a historical context, dating from the Contemporary era to the present day, which have been achieved by inventors who are either native-born or naturalized citizens of the United States.
List of Indian inventions and discoveries; List of Indonesian inventions and discoveries; List of inventions and discoveries of the Indus Valley Civilisation; List of inventions named after people; List of inventors killed by their own invention; Timeline of Irish inventions and discoveries; List of inventions in the medieval Islamic world
However, other inventors before Bell had worked on the development of the telephone and the invention had several pioneers. [429] 1877: Thomas Edison invents the first working phonograph. [430] 1878: Henry Fleuss is granted a patent for the first practical rebreather. [431] 1878: Lester Allan Pelton invents the Pelton wheel.
Download as PDF; Printable version; ... Inventors (22 C, 29 P)! Invention awards (2 C, 12 P) * ... Pages in category "Inventions"
Before play begins, the players agree on the number of links necessary to win the game. A game of Brain Chain takes approximately 30 minutes if the goal is four links in a row, an hour if the goal is five links, or 90 minutes if the winning condition is a six-link chain.