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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS56139074
Kind Code:
U
Application Number:
JP3724180U
Publication Date:
October 21, 1981
Filing Date:
March 24, 1980
Export Citation:
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International Classes:
F16L19/03; F16L35/00; (IPC1-7): F16L19/03; F16L35/00
Domestic Patent References:
JPS4711617B1
JPS4725967A