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4214878 | Nov 1993 | DE |
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Entry |
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English translation of “Development of Hard and Porous Carbon Material ‘RB Ceramics’ Using Rice Bran as a Starting Material”, Zairyou Kagaku, vol. 17, No. 6, pp. 24-27, May 1997. |
U.S. application Ser. No. 09/990 430, filed Nov. 21, 2001, entitled Material for Bearing Rolling Element; Applicant: Kazuo Hokkirigawa et al. |