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公开(公告)号：US3158325A
公开(公告)日：1964-11-24
申请号：US31561263
申请日：1963-10-11
Applicant: NICHOLSON MFG COMPANY
Inventor： RICHES DENIS G , JORGENSEN RAY B
IPC: B27L1/14
CPC classification number: B27L1/14
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