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Walter Edward Mutter (13 November 1921 - 9 September 1984) was an American physicist and inventor, whose career at IBM spanned several decades and resulted in significant patented technological advances in radio tube and transistor design and implementation for commercial computers.

Biography
Mutter was born and raised in Brooklyn, New York. After public school education he received a BS in Physical Chemistry from Brooklyn Polytechnic Institute in 1942 and a PhD in Physics from MIT in 1949.

Career
Following a 3 year stint working on cathode-ray-tube (CRT) development at Radio Corporation of America, and following the completion of his PhD, Mutter joined IBM in 1949 where he was the key person in the design and development of improved CRTs. Mutter was credited with the "lakes-and-bays" approach to optical character recognition (OCR) in computers. He later turned his focus to transistors and was a contributor to the IBM "mesa" germanium transistor. . He designed the Fly's Eye Camera which was named in 1965 as one of the 100 most significant new technical products by Industrial Research Magazine. . Mutter was a member of the American Physical Society, the American Chemical Society, the IRE, and the Sigma Xi and Phi Lambda Upsilon honorary professional societies.

Patents
EP0140175B1 Method for Manufacturing A Fresnel Reverse Plate Lens, Granted 1990-09-05 CA1055721A Gloss Measuring Instrument, Granted 1979-06-05 CA902254A Mass Production of Electronic Devices, Granted 1972-06-06 CA859935A Multilevel Terminal Metallurgy for Semiconductor Devices, Granted 1970-12-29 CH481487A Multi-layer, Metallized Connection Network Arranged on the Surface of a Planar Semiconductor Body, Published 1969-11-15 CA823349A Metallization Process, Granted 1969-09-16 AU406868B2 Improvements in or Relating to the Formation of a Metal Contact on a Semiconductor, Granted 1969-04-17 US3399331A Electrical Device and Contacts, Granted 1968-08-27 US3335340A Combined Transistor and Testing Structures and Fabrication Thereof, Granted 1967-08-08 US3319311A Semiconductor Devices and Their Fabrication, Granted 1967-05-16 US3067071A Semiconductor Devices and Methods of Applying Metal Films Thereto, Granted 1962-12-04 US28889535A Recognition of Recorded Intelligence, Granted 1959-06-02 US2597363A Cathode-Ray Storage Tube, Granted 1952-05-20

Works
The Kinetics of Thermal Decomposition of Gaseous Methyl Ethyl, Chas E Waring and Walter E Mutter, 1948 https://pubs.acs.org/doi/pdf/10.1021/ja01192a033

Study of the Electronic Energy Level Structure of Oxide-Coated Cathode, 1949, https://dspace.mit.edu/bitstream/handle/1721.1/50825/RLE_QPR_015_I.pdf?sequence=1