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发明名称
Bubble pipe
摘要
A bubble pipe comprises a wide outer tube and one or more shorter narrower inner tubes that project beyond the outer tube. The inner tube or tubes may be slidable within the outer tube.
申请公布号
US4246717(A)
申请公布日期
1981.01.27
申请号
US19790026528
申请日期
1979.04.03
申请人
EHRLICH, JOSEPH R.
发明人
WACHTEL, JACK S.
分类号
A63H33/28;(IPC1-7):A63H33/28
主分类号
A63H33/28
代理机构
代理人
主权项
地址
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