发明授权
US3843037A Carton spout 失效
CARTON SPOUT

Carton spout
摘要:
A structure of a dispenser spout built in a carton which keeps the dispenser spout closed while not in use, wherein a means to hold securely a flap of dispensing spout capable of opening and closing freely is provided to the carton, said flap being formed by cutting a part of the carton body.
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