improvement patent
31Economic Affairs — ▪ 2006 Introduction In 2005 rising U.S. deficits, tight monetary policies, and higher oil prices triggered by hurricane damage in the Gulf of Mexico were moderating influences on the world economy and on U.S. stock markets, but some other… …
32List of Tesla patents — Below is a list of Tesla patents. Dr. Nikola Tesla was an inventor who obtained around 300 patents [Snezana Sarbo, [http://www.tesla symp06.org/papers/Tesla Symp06 Sarboh.pdfNikola Tesla s Patents] , Sixth International Symposium Nikola Tesla,… …
33Fleming valve — schematic from US Patent 803,684. The Fleming valve, also called the Fleming oscillation valve, was a vacuum tube diode invented by John Ambrose Fleming and used in the earliest days of radio communication. As the first vacuum tube, the IEEE has… …
34Barbed wire — For other uses, see Barb wire (disambiguation). A close up view of a barbed wire barb …
35Antonio Meucci — Born 13 April 1808(1808 04 13) Florence, Italy …
36George Westinghouse — Infobox Scientist name = George Westinghouse caption = birth date = birth date|1846|10|6 birth place = Central Bridge, New York death date = death date and age|1914|03|12|1846|10|06 death place = New York, New York residence = citizenship =… …
37Richard Jordan Gatling — Infobox Scientist name =Richard Jordan Gatling box width = image width = caption =Photograph of Gatling birth date =September 12, 1818 birth place =Hertford County, North Carolina death date =February 26, 1903 death place =New York City residence …
38Daniel Leavitt — William Michael Harnett, The Faithful Colt 1890, Wadsworth Atheneum, Hartford, Connecticut. Painting of an early American revolver Daniel Leavitt (1813–59) [1] was an early American inventor who with his partner Edwin Wesson patented the first… …
39Alexander Graham Bell — Infobox Person name = Alexander Graham Bell image size = 225px caption = Portrait of Alexander Graham Bell c. 1910 birth date = 3 March 1847 birth place = Edinburgh, Scotland, UK death date = death date and age|1922|8|2|1847|3|3|df=y death place …
40technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
