Title:
吸音壁装置とこれを用いた防音室
Document Type and Number:
Japanese Patent JP4112958
Kind Code:
B2
Inventors:
Kashitaro Hashimoto
Application Number:
JP2002350892A
Publication Date:
July 02, 2008
Filing Date:
December 03, 2002
Export Citation:
Assignee:
Tetsukosha Inc. Bull
International Classes:
F16L55/02; G10K11/16; E04B1/86
Domestic Patent References:
| JP10169015A | ||||
| JP2000309989A | ||||
| JP8284278A |
Attorney, Agent or Firm:
Masaru Ishihara