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:
Nov. 09, 1976
Filed:
Mar. 24, 1975
Applicant:
Inventor:
Kjell Olow Olsson, Jarfalla, SW;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G08G / ; B61L / ; H04Q / ; H04Q / ;
U.S. Cl.
CPC ...
3401 / ; 340 / ; 340 47 ; 3401 / ;
Abstract
A device for transmitting a coded information about an actual signal condition of a signalling system, in which a plurality of conductor pairs are energized from assigned a.c. power sources upon actuation of corresponding signal devices, separation transformers each having a plurality of secondary windings are connected to respective conductor pairs and signals from the secondary windings are rectified and fed to assigned inputs of a code unit.
Olsson, Kjell. (1976). Information transmission equipment (U.S. Patent No. 3991403). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3991403
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile