Document Type and Number:
Japanese Patent JPS57176680
Kind Code:
U
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Application Number:
JP6396481U
Publication Date:
November 08, 1982
Filing Date:
April 30, 1981
Export Citation:
International Classes:
F04B9/04; F04B35/00; F04B35/01; (IPC1-7): F04B35/00; F04B9/04