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公开(公告)号:US2972115A
公开(公告)日:1961-02-14
申请号:US69310457
申请日:1957-10-29
Applicant: NAT COMPANY INC
Inventor: ZACHARIAS JERROLD R , HOLLOWAY JOSEPH H , GRANT EUGENE F
公开(公告)号:US2972115A
公开(公告)日:1961-02-14
申请号:US69310457
申请日:1957-10-29
Applicant: NAT COMPANY INC
Inventor: ZACHARIAS JERROLD R , HOLLOWAY JOSEPH H , GRANT EUGENE F