Lignes Telegraphiques et Telephoniques-L.T.T.
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Dec 16, 1986 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 39 Total Citation Count
- Jan 11, 1983 Earliest Filing
- 4 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
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Recent Publications
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Recent Patents
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Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4630255 Optical multiplexer-demultiplexer for use with optical fiber wavelengthsExpiredDec 31, 84Dec 16, 86[H04B]
4621894 A device for distributing light energy including at least one inlet fiber with a chamfered outlet end and a diffraction grating, and application thereof to optical switchingExpiredJun 13, 85Nov 11, 86[G02B]
4504975 System for transmitting digital signals over an optical fiberExpiredJan 11, 83Mar 12, 85[H04B]
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