IP Library › Granted Patent US 4,890,893
Granted Patent Utility
US 4,890,893 · App. 07/317,920

Dark fiber switched bandwidth filter

Inventor: Lanny S. Smoot
Patented Case View Patent ↗
Granted: Jan 2, 1990 Filed: Mar 2, 1989
Inventor
Lanny S. Smoot
Assignee (at issue)
Bell Communications Research, Inc.

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Quick Facts
Patent No.
US 4,890,893
App. No.
07/317,920
Filed
1989-03-02
Granted
1990-01-02
Kind
A