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公开(公告)号：US3293770A
公开(公告)日：1966-12-27
申请号：US28833563
申请日：1963-06-17
Applicant: SELAS CORP OF AMERICA
Inventor： RAUSKOLB FRED W
CPC classification number: F26B3/305 , D21F5/00 , F26B13/008
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