Title:
【発明の名称】大深度温泉水温度低下防止揚湯施設
Document Type and Number:
Japanese Patent JP2762117
Kind Code:
B2
Inventors:
SUGAWARA HIROMITSU
Application Number:
JP17125989A
Publication Date:
June 04, 1998
Filing Date:
July 04, 1989
Export Citation:
Assignee:
YAMADAI KIDEN KK
International Classes:
E21B17/00; E21B43/00; (IPC1-7): E21B43/00
Domestic Patent References:
| JP6376093U |
Attorney, Agent or Firm:
Yozo