Granted Patent
Utility
US 5,864,645 · App. 08/836,588
Double-core light-conducting fiber, process for producing the same, double-core fiber laser, and double-core fiber amplifier
Inventors:
Holger Zellmer, Joern Bonse, Sonja Unger, Volker Reichel
Patented Case
View Patent ↗
Granted: Jan 26, 1999
Filed: May 16, 1997
Inventors
Holger Zellmer
Joern Bonse
Sonja Unger
Volker Reichel
Assignee (at issue)
LDT GmbH & Co. Laser-Display-Technologie KG
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.