Document Type and Number:
Japanese Patent JPH0176579
Kind Code:
U
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Application Number:
JP17258787U
Publication Date:
May 24, 1989
Filing Date:
November 11, 1987
Export Citation:
International Classes:
F04B45/053; F04B45/04; (IPC1-7): F04B45/04
Next Patent: JPH0176580