taking out a patent

  • 31photography, history of — Introduction       method of recording the image of an object through the action of light, or related radiation, on a light sensitive material. The word, derived from the Greek photos (“light”) and graphein (“to draw”), was first used in the… …

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  • 32Science and invention in Birmingham — Birmingham is the second largest city in the United Kingdom. It is one of the country s principal industrial centres and has an impressive history of industrial and scientific innovation.16th century1547: Although no record is kept to indicate… …

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  • 33Antonio Meucci — Born 13 April 1808(1808 04 13) Florence, Italy …

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  • 34Kite types — Colorful delta wing kite Kites are tethered flying objects which fly by using aerodynamic lift, requiring wind, (or towing), for generation of airflow over the lifting surfaces. Contents 1 Kite …

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  • 35Hearing aid — Behind the ear aid In the ear aid …

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  • 36Metal Storm — Metalstorm redirects here. For other uses, see Metal Storm (disambiguation). Metal Storm Limited Type Public (ASX: MST) …

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  • 37Steamboat — A steamboat or steamship, sometimes called a steamer, is a ship in which the primary method of propulsion is steam power, typically driving a propeller or paddlewheel. The term steamboat is usually used to refer to smaller steam powered boats… …

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  • 38Richard Trevithick — Infobox Scientist name = Richard Trevithick box width = image width = 150px caption = Richard Trevithick, by John Linnell (1792 1882) birth date = April 13, 1771 birth place = Cornwall death date = April 22, 1833 (aged 62) death place = Dartford …

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  • 39History of Venezuela — Infobox Country native name = República Bolivariana de Venezuela conventional long name = Bolivarian Republic of Venezuela common name = Venezuela official languages = Spanish demonym = Venezuelan capital = Caracas latd=10 |latm=30 |latNS=N… …

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  • 40Antipsychotic — Advertisement for Thorazine (chlorpromazine) from the 1950s[1] An antipsychotic (or neuroleptic) is a tranquilizing psychiatric medication primarily used to manage psychosis (including delusions or hallucinations, as well as disordered tho …

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