Title:
PIPE HAVING INTERNAL SLOT OR PROTECTION AND FORMING METHOD
Document Type and Number:
Japanese Patent JPS53116522
Kind Code:
A
Inventors:
AKACHI HISATERU
Application Number:
JP3137677A
Publication Date:
October 12, 1978
Filing Date:
March 22, 1977
Export Citation:
Assignee:
OKI ELECTRIC CABLE
International Classes:
F16L11/11; B29B7/00; B29C47/00; B29C48/32; F16L11/04; F16L11/12; (IPC1-7): B29D23/04; F16L11/11; F16L11/12
Domestic Patent References:
| JP46020230A | ||||
| JP50150824B | ||||
| JPS4730641U | 1972-12-07 | |||
| JPS4897964A | 1973-12-13 |