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A timeline of United States inventions (1946–1991) encompasses the ingenuity and innovative advancements of the United States within a historical context, dating from the era of the Cold War, which have been achieved by inventors who are either native-born or naturalized citizens of the United States.

inventions from other historical time periods, see Timeline of United States inventions (before 1890), Timeline of United States inventions (1890–1945), and Timeline of United States inventions (after 1991).

1947 Magnetic particle clutch A magnetic particle clutch is a special type of electromagnetic clutch which does not use friction plates.

Instead, it uses a fine powder of magnetically susceptible material (typically stainless steel) to mechanically link an otherwise free wheeling disc attached to one shaft, to a rotor attached to the other shaft.

Shockley is considered by many to be the "father" of the transistor.

Hence, in recognition of his work, the transistor is widely, yet not universally acknowledged as the most important invention of the entire 20th century since it forms today's building blocks of processors found and used in almost every modern computing and electronics device.

A chipper teeth is a variant of a saw chain used on a chainsaw.

In electronics, a transistor is a semiconductor device commonly used to amplify or switch electronic signals.However, the Uruguay Round Agreements Act of 1994 (URAA) changed the patent term in the United States to a total of 20 years, effective for patent applications filed on or after June 8, 1995, thus bringing United States patent law further into conformity with international patent law. In 1946, American theoretical astrophysicist Lyman Spitzer was proposed the idea of a telescope in outer space, a decade before the Soviet Union launched the first artificial satellite, Sputnik into orbit.The modern-day provisions of the law applied to inventions are laid out in Title 35 of the United States Code (Ch. However, German scientist Hermann Oberth had first conceived the idea of a space based telescope.It consists of a pressure-sensitive adhesive coated onto a backing material which is usually a polypropylene or polyester film and fiberglass filaments embedded to add high tensile strength.Filament tape was invented in 1946 by Cyrus Woodrow Bemmels.

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