Title:
地表面保護材および地表面保護構造
Document Type and Number:
Japanese Patent JP5421047
Kind Code:
B2
Inventors:
Yasushi Koizumi
Fumio Seki
Naruo Usui
Fumio Seki
Naruo Usui
Application Number:
JP2009229900A
Publication Date:
February 19, 2014
Filing Date:
October 01, 2009
Export Citation:
Assignee:
Koizumi Seima Co., Ltd.
International Classes:
E02D17/20; A01G1/00; E02B3/04
Domestic Patent References:
| JP3047346U | ||||
| JP2004141070A | ||||
| JP2003284434A | ||||
| JP11061834A |
Attorney, Agent or Firm:
Patent business corporation Yuko patent office