IP Library › Granted Patent US 5,218,665
Granted Patent Utility
US 5,218,665 · App. 07/954,468

Double core, active fiber optical amplifier having a wide band signal wavelength

Inventors: Giorgio Grasso, Paul L. Scrivener
Patented Case View Patent ↗
Granted: Jun 8, 1993 Filed: Sep 30, 1992
Inventors
Giorgio Grasso
Paul L. Scrivener
Assignee (at issue)
Pirelli Cavi S.p.A.

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,218,665
App. No.
07/954,468
Filed
1992-09-30
Granted
1993-06-08
Kind
A