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公开(公告)号：US1660248A
公开(公告)日：1928-02-21
申请号：US19690127
申请日：1927-06-06
Applicant: TEXAS PACIFIC COAL AND OIL COM
Inventor： ROBERT BEATTIE
IPC: C10L1/00
CPC classification number: C10L1/00 , Y10S159/33
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