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公开(公告)号：US3370648A
公开(公告)日：1968-02-27
申请号：US52208866
申请日：1966-01-21
Applicant: SELAS CORP OF AMERICA
Inventor： BIGELOW JR CHARLES G , STANLEY BUMBLE , MAGINN JOSEPH C , SCHAUERMANN FLOYD L , WILT JR CHARLES R
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