Document Type and Number:
Japanese Patent JPS52128365
Kind Code:
U
Application Number:
JP3868777U
Publication Date:
September 29, 1977
Filing Date:
March 31, 1977
Export Citation:
International Classes:
F16L9/22; F24F13/02; (IPC1-7): F24F13/02; F16L9/20
Domestic Patent References:
| JPS3930174Y1 | ||||
| JPS4025979Y1 |
Foreign References:
| US3507206A | 1970-04-21 |