Granted Patent
Utility
US 5,815,908 · App. 08/719,861
Method and apparatus for producing a metal tube containing a light waveguide with an excess length
Inventor:
Franz-Josef Wichmann
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Sep 25, 1996
Inventor
Franz-Josef Wichmann
Assignee (at issue)
Siemens Aktiengesellschaft
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.