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:
Apr. 02, 1996
Filed:
Apr. 20, 1994
Applicant:
Inventor:
David M Spirit, Suffolk, GB;
Assignee:
British Telecommunications public limited company, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
359341 ; 359110 ;
Abstract
A waveguide carrying system signals at a first wavelength and OTDR signals at a second wavelength is provided with an optical amplifier and an isolator. The isolator has a high isolation factor at the first wavelength and a low isolation factor at the second wavelength.
Spirit, David. (1996). Optical time domain reflectometry (U.S. Patent No. 5504617). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5504617
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile