Title:
【考案の名称】水の中で聞こえる耳栓
Document Type and Number:
Japanese Patent JPH0639034
Kind Code:
U
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Inventors:
Akihiro Kashiwagi
Application Number:
JP8804792U
Publication Date:
May 24, 1994
Filing Date:
November 11, 1992
Export Citation:
Assignee:
Akihiro Kashiwagi
International Classes:
A63B33/00; (IPC1-7): A63B33/00
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