Title:
地中熱交換器及びその埋設方法
Document Type and Number:
Japanese Patent JP7023041
Kind Code:
B2
Inventors:
Yuji Yamashita
Hiroshi Yabe
Fukada Hisa
Hiroshi Yabe
Fukada Hisa
Application Number:
JP2020111185A
Publication Date:
February 21, 2022
Filing Date:
June 29, 2020
Export Citation:
Assignee:
Fudo Tetra Co., Ltd.
International Classes:
F25B27/00; E21B43/00; F28D15/02
Domestic Patent References:
| JP2013148255A | ||||
| JP59115989A | ||||
| JP58142161A | ||||
| JP3195255U |
Foreign References:
| DE2525480A1 | ||||
| EP2418439A2 | ||||
| CN106935929A |
Attorney, Agent or Firm:
Hideki Yamamoto