Title:
【発明の名称】既設管内周面の保護方法
Document Type and Number:
Japanese Patent JP3061669
Kind Code:
B2
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Inventors:
Yasushi Kitayama
Application Number:
JP32319691A
Publication Date:
July 10, 2000
Filing Date:
December 06, 1991
Export Citation:
Assignee:
Sekisui Chemical Co.,Ltd.
International Classes:
B29C63/34; F16L58/02; G21D1/00; (IPC1-7): G21D1/00; B29C63/34; F16L58/02
Domestic Patent References:
| JP393672U |