The Maxim gun is a recoil-operated machine gun invented in 1884 by Hiram Stevens Maxim (later Sir Hiram); the weapon became the first automatic firearm in production by Vickers and also known as the first automatic firearm in the world, which used .303 British ammunition and a recoil-operating firing system, and required water cooling.
invented by Isaac Charles Johnson
Portland cement is the most common type of cement in general use around the…
invented by
A tunnelling shield is a protective structure used during the excavation of…
invented by Nicolaus August Otto
A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in…
invented by Rudolf Diesel
The diesel engine, named after Rudolf Diesel, is an internal combustion engine…
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