Document Type and Number:
Japanese Patent JPS53145227
Kind Code:
U
Application Number:
JP5028377U
Publication Date:
November 15, 1978
Filing Date:
April 22, 1977
Export Citation:
International Classes:
F16L37/22; F16L37/00; F16L37/23; F16L37/28; F16L37/40; (IPC1-7): F16L37/22; F16L37/28
Domestic Patent References:
JPS4421736Y1 | 1969-09-13 | |||
JPS4715210B1 | 1972-05-08 |
Foreign References:
GB828964A | 1960-02-24 |