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公开(公告)号：US2783622A
公开(公告)日：1957-03-05
申请号：US44929054
申请日：1954-08-12
Applicant: BOURASSA WILBUR O
Inventor： BOURASSA WILBUR O
CPC classification number: B60H1/3201 , B60H1/20 , F25B15/06 , F25B27/02 , Y02A30/274
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