Title:
【考案の名称】ダイビング用マスク
Document Type and Number:
Japanese Patent JPH04133859
Kind Code:
U
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Inventors:
Matsuoka Seisei
Application Number:
JP4890091U
Publication Date:
December 14, 1992
Filing Date:
May 30, 1991
Export Citation:
International Classes:
A63B33/00; B63C11/12; (IPC1-7): A63B33/00; B63C11/12