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:
May. 16, 1978
Filed:
Jan. 07, 1977
Applicant:
Inventors:
Toshinobu Kuroyama, Kasugai, JA;
Hisashi Hirose, Toyota, JA;
Assignee:
Toyota Jidosha Kogyo K.K., , JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04B / ; G04B / ; G04C / ;
U.S. Cl.
CPC ...
58 5 / ; 58 2 / ; 5815 / ;
Abstract
A motor vehicle digital display clock including a digital time display performed by fluorescent type display tubes provided in the passenger compartment of the motor vehicle, a driving means for generating time signals to be displayed on the display means, a selection switch means provided in the passenger compartment which generates a brightness signal and a brightness control circuit electrically coupled to the grid of the fluorescent type display tubes which controls the brightness of the fluorescent type display tubes by controlling the grid voltage in response to the brightness signal.