Title:
【発明の名称】膨脹符号反転波干渉型防音装置
Document Type and Number:
Japanese Patent JP2606888
Kind Code:
B2
Inventors:
Okazaki Teiji
Application Number:
JP16198388A
Publication Date:
May 07, 1997
Filing Date:
June 29, 1988
Export Citation:
Assignee:
Civil Environmental Engineering Co., Ltd.
International Classes:
E01F8/00; (IPC1-7): E01F8/00; E01F8/02
Attorney, Agent or Firm:
Tai Oshima