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公开(公告)号:JP2957737B2
公开(公告)日:1999-10-06
申请号:JP9419791
申请日:1991-04-24
Applicant: エヌティエヌ株式会社
Inventor: NAKAMURA SATOSHI
IPC: F16C19/30 , F16C33/58 , F16C33/66