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:
Oct. 06, 1981
Filed:
Dec. 06, 1979
Applicant:
Inventor:
Jacob Cepelinski, Ottawa, CA;
Assignee:
Mitel Corporation, Kanata, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ; H04M / ;
U.S. Cl.
CPC ...
179 / ; 179 / ; 179 / ;
Abstract
A telephone system automatic ringing code decoder useful to provide single party ringing on a multi-party telephone line. The decoder counts the number of ring bursts and detects the length of the last ring burst in the first ring burst code sequence and compares it with a preselected code. Upon finding a match, it provides an output on an SEL lead, indicating that further ringing can be applied to a subscriber's set ringer.
Quick Actions:
Cepelinski, Jacob. (1981). Ringing decoder circuit (U.S. Patent No. 4293737). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4293737
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile