Title:
【考案の名称】パイプインパイプ工法用推進力伝達リング
Document Type and Number:
Japanese Patent JPS5959585
Kind Code:
U
Inventors:
Yamaji Tadao
Nakajima Akira
Sakurai Yoshimi
Nakajima Akira
Sakurai Yoshimi
Application Number:
JP15553782U
Publication Date:
April 18, 1984
Filing Date:
October 13, 1982
Export Citation:
International Classes:
F16L21/02; E21D9/06; F16L1/00; F16L1/024; F16L21/00; (IPC1-7): F16L1/02; E21D9/06; F16L21/00
Domestic Patent References:
| JPS5422009U | 1979-02-13 |