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公开(公告)号：US3292580A
公开(公告)日：1966-12-20
申请号：US45972465
申请日：1965-05-28
Applicant: BABSON BROS CO
Inventor： MERRITT SR THOMAS W , THOMAS CHESTER A , SHULICK ROBERT J
IPC: A01J5/04
CPC classification number: A01J5/04
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