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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS57150680
Kind Code:
U
More Like This:
Application Number:
JP3678481U
Publication Date:
September 21, 1982
Filing Date:
March 18, 1981
Export Citation:
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International Classes:
F16L9/14; E21D9/06; F16L58/06; (IPC1-7): F16L9/14; E21D9/06; F16L58/06
Domestic Patent References:
JP45037511A
JPS4310447Y11968-05-07
JPS4922014U1974-02-25