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. 08, 1991
Filed:
Jan. 29, 1990
Applicant:
Inventor:
Edgar Martinez, White Plains, NY (US);
Assignee:
Nynex Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379413 ; 379324 ;
Abstract
An interconnecting apparatus for a subscriber premises which allows the DC battery providing sealing current to the tip and ring telephone lines serving the premises to be used as a backup battery for a subscriber terminal and which allows the supply serving the subscriber terminal to be used to charge the central office battery and provide sealing current when the latter battery is low.
Martinez, Edgar. (1991). Backup power supply at subscriber terminal (U.S. Patent No. 4984267). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4984267
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile