The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 2004
Filed:
Nov. 19, 2001
Applicant:
Inventors:
Takashi Kobayashi, Yamanashi-ken, JP;
Yoshizumi Ohta, Yamanashi-ken, JP;
Kazumi Miyamoto, Yamanashi-ken, JP;
Assignee:
Citizen Electronics Co., Ltd., Fujiyoshida, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 2/500 ;
U.S. Cl.
CPC ...
H04R 2/500 ;
Abstract
A speaker has a case having a peripheral projection, a yoke made of magnetic material and secured to the case, and a permanent magnet provided in the case. A vibrating plate having a peripheral projection is secured to an outside wall of the case at the peripheral projection. A protector plate is secured to the case.