描述
Official First Day Cover `25 Years of Transistors` with handdrawn sketch signed, 6,5 x 3,5 inch, (New York), (10.07.1973), signed by William B. Shockley with an added drawing of a transistor in blue ballpoint ink, attractively mounted (removable) for fine display with a photograph, shows William B. Shockley as physicists (altogether 8,25 x 11,75 inch), in very fine condition.
有关该人的更多信息
Profession:
(1910-1989) United States scientist, Nobel Prize in Physics (1956) .
出生年份： 1910
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