Document Type and Number:
Japanese Patent JPH0417815
Kind Code:
Y2
Application Number:
JP10203886U
Publication Date:
April 21, 1992
Filing Date:
July 04, 1986
Export Citation:
International Classes:
F15B3/00; E21B7/18; F04B9/10; F04B23/04; (IPC1-7): F04B9/10; F04B23/04; F15B3/00
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