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公开(公告)号:US3453513A
公开(公告)日:1969-07-01
申请号:US3453513D
申请日:1966-03-10
Applicant: NAT RES DEV
Inventor: BATES JAMES JOHN , SRIDHAR TIRUCHENDURAI VISWANAT
公开(公告)号:US3453513A
公开(公告)日:1969-07-01
申请号:US3453513D
申请日:1966-03-10
Applicant: NAT RES DEV
Inventor: BATES JAMES JOHN , SRIDHAR TIRUCHENDURAI VISWANAT