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公开(公告)号:US3169211A
公开(公告)日:1965-02-09
申请号:US10571561
申请日:1961-04-26
Applicant: SFD LAB INC
Inventor: JEROME DREXLER , ROBERT ANGLE , FEULNER FRED A
公开(公告)号:US3169211A
公开(公告)日:1965-02-09
申请号:US10571561
申请日:1961-04-26
Applicant: SFD LAB INC
Inventor: JEROME DREXLER , ROBERT ANGLE , FEULNER FRED A