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:
Mar. 29, 1994
Filed:
Dec. 03, 1991
Applicant:
Inventors:
Akira Hayama, Saitama, JP;
Tsutomu Nishizaka, Saitama, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
381 86 ; 34082534 ; 455346 ; 455348 ;
Abstract
A body of a car stereo has a first substrate and a detachable grille has a second substrate. The second substrate has an operating device, a display and a control unit where an identification data is stored. The first substrate has a grille attachment detecting device a power supply means and a control unit having an identification data discriminating device which discriminates the identification data in the control unit on the second substrate of the grille. When the identification data discriminating device determines that an appropriate grille is attached, the power is fed to the grille through the power supply device.