Top 10 inventions facts Selected as the most interesting among inventions related questions in Inventions quiz The Claw of Archimedes was used as ...Weapon that protected Syracuse. Archimedes devised defensive devices to counter the Roman efforts including a huge crane operated hook – the Claw of Archimedes – that was used to lift the enemy ships out of the sea before dropping them to their doom. Created by: Tschukaancient Greece facts » Where was the wheel first invented?In Mesopotamia. A wheel is a circular component that is intended to rotate on an axle bearing. The first evidence of wheeled vehicles appears in the second half of the 4th millennium BCE, in Mesopotamia (Sumerian civilization), Created by: Tschukaantiquity facts » What is Hero's engine?Steam turbine. An aeolipile (or aeolipyle, or eolipile), also known as a Hero's engine, is a simple bladeless radial steam turbine which spins when the central water container is heated. In the 1st century AD, Hero of Alexandria described the device in Roman Egypt, and many sources give him the credit for its invention.Created by: Tschukaantiquity facts » Who invented spectroscope?Joseph van Fraunhofer. Joseph Ritter von Fraunhofer was a Bavarian physicist and optical lens manufacturer. He made optical glass and achromatic telescope objective lenses, invented the spectroscope, and developed diffraction grating. Created by: Ninjaiinventors facts » When was the lawnmower invented by Edwin Beard Budding?1830. Budding's mower was designed primarily to cut the lawn on sports grounds and extensive gardens and was granted a British patent on 31 August 1830. It took ten more years and further innovations to create a machine that could be worked by animals, and sixty years before a steam-powered lawn mower was built.Created by: Ninjai When Joseph-Louis Lambot used reinforced concrete for the first time?1848. In 1841 he started constructing water tanks using cement mortar and iron reinforcement. In 1848 he constructed his first boat using the same system which was later presented at the 1855 World's Fair in Paris.Created by: Ninjaihistory of technics facts » Who constructed the first radio receiver?Nikola Tesla. Marconi was considered to be the first radio constructor but in 1943 the US Supreme Court has granted Tesla patent rights. Marconi admitted he was using Tesla's work in his construction.Created by: Ninjaiinventors facts » Where was black gunpowder invented?China. Black gunpowder was invented in 9th-century China and spread throughout most parts of Eurasia by the end of the 13th century. Originally developed by alchemists for medicinal purposes, gunpowder was first used for warfare about 1000 CE.Created by: Ninjaifirearms facts » What happens to a patent when it expires?It becomes public domain. A patent allows you, and only you, to profit from your genius when you invent something new. No one else can manufacture or sell your invention unless you give permission. When a patent expires, anyone can copy your idea and market it. It becomes public domain Created by: Tschukalaw facts » How long does patent protection last?20 years. A patent is a set of exclusive rights granted by a sovereign state to an inventor or assignee for a limited period of time in exchange for detailed public disclosure of an invention. Patent protection is granted for a limited period, generally 20 years from the filing date of the application.Created by: Tschukaoffices facts » Play inventions quiz and see all the questions.