Title:
【発明の名称】ヘッドホン装置
Document Type and Number:
Japanese Patent JP2893701
Kind Code:
B2
Inventors:
SASAKI TOORU
OOKUBO HITOSHI
KIMURA AKYOSHI
OOKUBO HITOSHI
KIMURA AKYOSHI
Application Number:
JP5214989A
Publication Date:
May 24, 1999
Filing Date:
March 06, 1989
Export Citation:
Assignee:
SONII KK
International Classes:
H04R1/10; H04R1/40; H04R3/00; (IPC1-7): H04R3/00; H04R1/10; H04R1/40
Domestic Patent References:
| JP55120300A | ||||
| JP61196698A | ||||
| JP60220698A | ||||
| JP59200599A | ||||
| JP622798A | ||||
| JP52133206A | ||||
| JP1142295U | ||||
| JP55179481U | ||||
| JP6170486U |
Other References:
【文献】特許2638838(JP,B2)
Attorney, Agent or Firm:
Akira Koike (2 outside)