Title:
【考案の名称】二層管
Document Type and Number:
Japanese Patent JP2603587
Kind Code:
Y2
Inventors:
Hiroshi Nishino
Yoshiro Koyama
Yoshiro Koyama
Application Number:
JP5590693U
Publication Date:
March 15, 2000
Filing Date:
October 15, 1993
Export Citation:
Assignee:
Mitsubishi Plastics Co., Ltd.
International Classes:
F16L58/10; F16L7/00; F16L9/18; (IPC1-7): F16L9/18; F16L7/00; F16L58/10
Domestic Patent References:
| JP439382U |