Invention/Discovery Name of the Inventor Year of Invention Automatic Calculator Wilhelm Schickard 1623 Air Conditioner Willis Carrier 1902 Anemometer Leon Battista Alberti 1450 Animation J. Stuart Blackton Atom Bomb Julius Robert Oppenheimer 1945 Aspirin Dr. Felix Hoffman 1899 Airplane Wilber and Orville Wright 1903 Adhesive tape Richard G. Drew 1923 Bifocal Lens Benjamin Franklin 1779 Barometer Evangelista Torricelli 1643 Barbed Wire Joseph F. Glidden 1873 Blood Group Karl Lansdsteiner 1900s Ball Point Pen John Loud — Bicycle Tyres John Boyd Dunlop 1888 Pedal Driven Bicycle Kirkpatrick Macmillan 1839 Celluloid Alexander Parkes 1861 Chloroform Sir James Young Simpson Cine Camera Wm. Friese-Greene 1889 Circulation of blood William Harvey 1628 Clock Mechanical Hsing and Ling-Tsan 1725 Diesel Engine Rudolf Diesel