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公开(公告)号:US3397077A
公开(公告)日:1968-08-13
申请号:US28046063
申请日:1963-05-14
Applicant: ERNEST R BOLLER
Inventor: BOLLER ERNEST R , SNIDER GERALD E
公开(公告)号:US3397077A
公开(公告)日:1968-08-13
申请号:US28046063
申请日:1963-05-14
Applicant: ERNEST R BOLLER
Inventor: BOLLER ERNEST R , SNIDER GERALD E