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. 09, 1979
Filed:
Nov. 16, 1977
Applicant:
Inventors:
Jean A Picandet, Paris, FR;
Andre N Baratin, Neuilly sur Seine, FR;
Assignee:
Jeumont-Schneider, Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
1791 / ; 179 / ;
Abstract
A subscriber's telephone line equipment for connection to a telephone exchange for replacing a telephone transformer or other kind of transformer. The equipment comprises a circuit connected to the telephone line which comprises two voltage sources, a chopper circuit, a voltage-doubling rectifier, a current-limiting circuit and a closed-loop detecting circuit, and receiving and transmitting circuits connected to said telephone exchange.
Picandet, Jean. (1979). Subscriber's line equipment for a telephone exchange (U.S. Patent No. 4133986). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4133986
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile