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. 06, 1989
Filed:
Aug. 13, 1987
Applicant:
Inventor:
Randall A White, Plainville, MA (US);
Assignee:
Digital Equipment Corporation, Maynard, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05G / ;
U.S. Cl.
CPC ...
340762 ; 340782 ; 34081503 ; 362800 ;
Abstract
In order to indicate a function status which can be one of three states, upon detecting a first state, a bicolor LED is lighted with a first color; upon detecting a second state, the LED is lighted with a second color; and upon detecting a third state, the LED is alternately lighted with said first and said second colors at a sufficiently high rate to cause the color of the LED to appear as a third color.