Title:
【発明の名称】防滴型超音波マイクロホン
Document Type and Number:
Japanese Patent JP2978272
Kind Code:
B2
Inventors:
YAMAZAKI YOSHINORI
Application Number:
JP9381191A
Publication Date:
November 15, 1999
Filing Date:
April 24, 1991
Export Citation:
Assignee:
MATSUSHITA DENKO KK
International Classes:
H04R1/00; H04R1/44; H04R17/10; (IPC1-7): H04R1/00; H04R1/44; H04R17/10
Domestic Patent References:
| JP63255679A | ||||
| JP1102786U | ||||
| JP62100794U |
Attorney, Agent or Firm:
Keisei Nishikawa (1 person outside)