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| USA | USA | USA |
| Semiconductor Laboratory of Beckman Instruments, Inc. Mountain View, CA, USA |
University of Illinois Urbana, IL, USA |
Bell Telephone Laboratories Murray Hill, NJ, USA |
| b. 1910 (in London, United Kingdom) d. 1989 |
b. 1908 d. 1991 |
b. 1902 d. 1987 |