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公开(公告)号：US2572869A
公开(公告)日：1951-10-30
申请号：US5396648
申请日：1948-10-11
Applicant: MASONITE CORP
Inventor： KOONCE WILBUR E , STORY CHARLES F
IPC: D21F1/66
CPC classification number: D21F1/66
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