A chipper teeth is a variant of a saw chain used on a chainsaw.Tupperware is airtight plastic containers used for the preparation, storage, containment, and serving of perishable food in the kitchen and home.It has a donut-like rubber seal, known as an elastomeric packing unit, reinforced with steel ribs.During drilling or well interventions, the valve may be closed if overpressure from an underground zone causes formation fluids such as oil or natural gas to enter the wellbore and threaten the rig.109) into law which proclaimed that patents were to be authorized for "any useful art, manufacture, engine, machine, or device, or any improvement therein not before known or used." The Patent Act of 1836 (Ch. 117) further clarified United States patent law to the extent of establishing a patent office where patent applications are filed, processed, and granted, contingent upon the language and scope of the claimant's invention, for a patent term of 14 years with an extension of up to an additional 7 years. From 1836 to 2011, the United States Patent and Trademark Office (USPTO) has granted a total of 7,861,317 patents A space observatory is any instrument, such as a telescope, in outer space which is used for observation of distant planets, galaxies, and other outer space objects.The annular blowout preventer was invented by Granville Sloan Knox in 1946 who received a patent on September 9, 1952.Available in many colors, the plastic containers with "burp seal" did not become a commercial success until Brownie Wise, a Florida housewife, began throwing Tupperware parties in 1951 in order to demonstrate the product and explain the features.1946 Blowout preventer (annular) An annular blowout preventer is a large valve that uses a wedge to seal off a wellhead.1946 Filament tape Filament tape or strapping tape is a pressure-sensitive tape used for several packaging functions such as closing corrugated fiberboard boxes, reinforcing packages, bundling items, pallet utilizing, etc.In 1946, American logger Joseph Buford Cox of Portland, Oregon invented chipper teeth, which is still widely used today and represents one of the biggest influences in the history of timber harvesting.
Using a tooth that is curled over the top of the chain, there are alternate teeth which point left and right.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 the first to conceive 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. After lobbying in the 1960s and 1970s for such a system to be built, Spitzer's vision ultimately materialized into the world's first space-based optical telescope, Hubble Space Telescope, which was launched on April 20, 1990 by the Space Shuttle Discovery (STS-31).Copyright protection secures a person's right to his or her first-to-invent claim of the original invention in question, highlighted in Article I, Section 8, Clause 8 of the United States Constitution which gives the following enumerated power to the United States Congress: On April 10, 1790, President George Washington signed the Patent Act of 1790 (1 Stat. 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.