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・ J. D. Sumner
・ J. D. Thottan
・ J. D. Tippit
・ J. D. Trout
・ J. D. Tytler
・ J. D. Unwin
・ J. D. Walsh
・ J. D. Walsh (coach)
・ J. D. Walton
・ J. D. Watt
・ J. D. White
・ J. D. Wilkes
・ J. Christopher Reyes
・ J. Christopher Stevens
・ J. Church (English cricketer)
J. Clarence Karcher
・ J. Clarence Kind House
・ J. Clark
・ J. Clark Kelso
・ J. Clark Salyer National Wildlife Refuge
・ J. Clark Salyer Wetland Management District
・ J. Clarke
・ J. Clarke Richardson Collegiate
・ J. Cleaveland Cady
・ J. Clifford Baxter
・ J. Clifford Hansen
・ J. Clifford Hudson
・ J. Clifford Turpin
・ J. Clinton Brogdon House
・ J. Clinton Shepherd


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J. Clarence Karcher : ウィキペディア英語版
J. Clarence Karcher

John Clarence Karcher (June 4, 1894 – July 13, 1978) was an American geophysicist and businessman. He invented and eventually commercialized the reflection seismograph, applying for patents on this in 1919. In doing this he created the means by which most of the world's oil reserves have been discovered. In 1930 he and Eugene McDermott founded Geophysical Service Incorporated, a pioneering provider of seismic exploration services to the petroleum industry.〔(The Handbook of Texas Online ), Retrieved Sep 20, 2008〕 This company later spun off what would become Texas Instruments.
==Biography==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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