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:
Jun. 09, 1992
Filed:
Mar. 15, 1989
Applicant:
Inventor:
Yoshitaka Takasaki, Tokorozawa, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
359161 ; 359125 ; 359179 ;
Abstract
An optical subscriber network transmission system comprises a first optical transmission line transmitting information from center to a subscriber and a second optical transmission line transmitting information from to the subscriber to the center. A plurality of auxiliary optical transmission lines are disposed between the center and the subscriber.
Takasaki, Yoshitaka. (1992). Optical subscriber network transmission system (U.S. Patent No. 5121244). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5121244
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile