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发明名称
Novelty drinking straw
摘要
A novelty drinking straw has a layer of liquid crystalline material disposed thereon. As liquid is drawn through the straw, the color of said liquid crystalline material changes.
申请公布号
US3957202(A)
申请公布日期
1976.05.18
申请号
US19750614310
申请日期
1975.09.17
申请人
HORNSBY, JR., JAMES R.
发明人
HORNSBY, JR., JAMES R.
分类号
A47G21/18;(IPC1-7):A47G21/18
主分类号
A47G21/18
代理机构
代理人
主权项
地址
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