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	Browse Inventions: Machine for Crushing Stone Machine for making flat bottom paper bags Magnetic Core Memory Pulse Transfer Controlling Device An Wang made many notable contributions to the advancement of computer . . . . Magnetic Core Memory Magnetic Core Memory Kenneth H. Olsen, described by . . . . Magnetic Disk Drive Magnetic Disk Drive Magnetic Recording Electromagnetic Talking Device; Electromagnetic Talking Machine Semi Joseph Begun was a pioneer of magnetic recording. He developed t . . . . Magnetic Recording Method and Means of Magnetic Recording Marvin Camras' inventions are used in modern magnetic tape and wire re . . . . Magnetic Resonance Imaging Magnetic Resonance Imaging Magnetron High Efficiency Magnetron Percy Spencer, while working for the Raytheon Company, discovered a mo . . . . Magnetron Asymmetrically Conductive Device and Method of Making the Same Robert Hall invented the version of the magnetron that operates most m . . . . Manufacturing Lamp Black Margarine Margarine Carleton Van Staal Ellis was an inventor who used his knowledge of org . . . . Mason jar Matrix for Linotype-Machine Maxim gun; smokeless gunpowder Measuring instruments Mechanical Cash Register Mechanical Cash Register Brothers James and John Ritty invented a working version of a mechanic . . . . Mechanical Cash Register Mechanical Cash Register Brothers James and John Ritty a working version of a mechanical cash r . . . . Mechanical Reaper Improvement in Machines for Reaping Small Grain Cyrus Hall McCormick invented the mechanical reaper, which combined al . . . . Mercury-vapor Lamp Mercury-vapor Lamp Peter Cooper Hewitt patented the mercury vapor lamp which was widely u . . . . Metallic Filament Incandescent Lamp Electrical glow-light Walther Nernst developed a new form of electric lighting, the Nernst l . . . . Method and Apparatus for Photographing Objects in Motion Stop Action Photography Eadweard Muybridge made three major achievements in photography: first . . . . Method for Fabricating Transistors Method for Fabricating Transistors As a cofounder of both Fairchild Semiconductor and Intel, Gordon Moore . . . . Method of Making Insulated Gate Field Effect Transistor with Controlled Threshold Voltage Method of Making Insulated Gate Field Effect Transistor with Controlled Threshold Voltage John Macdougall is one of the inventors of the first commercially viab . . . . Method of Making Insulated Gate Field Effect Transistor with Controlled Threshold Voltage Method of Making Insulated Gate Field Effect Transistor with Controlled Threshold Voltage Kenneth Manchester is a pioneer in the development of ion implantation . . . . Method of Manufacturing Semiconductor Devices Method of Manufacturing Semiconductor Devices Early in 1959 while at Fairchild Semiconductor, Jean Hoerni invented t . . . . Method of producing a semiconductor element Method of producing a semiconductor element Gordon Teal began his career in 1930 concentrating on better vacuum tu . . . . Method of Recording and Reproducing Sounds or Signals Magnetic Wire Recorder Danish engineer Valdemar Poulsen demonstrated magnetic recording in 18 . . . . Mobile Communication System Mobile Communication System Switching Concept for Cellular Phones Modern day fire hydrant Modern Photocopier Modern Photocopier Gundlach devoted over three decades to the task of transforming the ma . . . . Modern zipper Molecular Sieves Molecular Sieve Adsorbents In 1956, Edith Flanigen began working on the emerging technology of "m . . . . Moog Synthesizer Moog Synthesizer Motion Picture Projector Motion Picture Projector Thomas J. Armat was a pioneer of early cinema best known for the co-in . . . . Motion Picture Projector Motion Picture Projector Charles Jenkins was an innovator of early cinema and one of the first . . . . MRI Apparatus and Method for Detecting Cancer in Tissue Raymond Damadian invented the magnetic resonance imaging (MRI) scanner . . . . Multiplane Camera Multiplane Camera Seldom has an individual become so intrinsically linked to a concept a . . . .