Title:
METAL FIXTURE FOR FIXING AND COUPLING UNDERGROUND JOINED PIPES FOR EXCAVATION
Document Type and Number:
Japanese Patent JPS52106301
Kind Code:
A
Inventors:
YAMASHITA SUSUMU
OKADA MASANORI
OKADA MASANORI
Application Number:
JP2363276A
Publication Date:
September 06, 1977
Filing Date:
March 03, 1976
Export Citation:
Assignee:
TAKENAKA KOMUTEN CO
International Classes:
E21B17/08; E21B19/00; (IPC1-7): E02D17/144; E21B19/00
Domestic Patent References:
| JPS5122081U | 1976-02-18 |