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1.发明授权Sound-producing device for toys for imitating voices, particularly of birds 失效用于模仿声音，特别是鸟类的玩具的声音产生装置
公开(公告)号：US3064388A
公开(公告)日：1962-11-20
申请号：US81479959
申请日：1959-05-21
Applicant: FIRM GEORG KOHLER
Inventor： FRITZ COLLISCHAN
IPC: A63H5/00
CPC classification number: A63H5/00
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