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:
Jan. 28, 1992
Filed:
Feb. 21, 1991
Applicant:
Inventor:
Gary Grantland, Hartselle, AL (US);
Assignee:
Quadrum Telecommunications, Inc., Arab, AL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ; G07F / ;
U.S. Cl.
CPC ...
2502 / ; 2502221 ; 453-4 ; 379148 ;
Abstract
A circuit operated in response to deposit of a coin through a trigger switch to selectively operate one of a plurality of signal generators. When coins are deposited through said coin trigger switch, blocking light from a light source to a light detection means, an associated signal driver activates a selected tone signal generator.