Granted Patent
Utility
US 4,412,853 · App. 06/278,158
Method of making optical waveguide fiber preform starter tubes
Inventor:
Fred P. Partus
Patented Case
View Patent ↗
Granted: Nov 1, 1983
Filed: Jun 29, 1981
Inventor
Fred P. Partus
Assignee (at issue)
Western Electric Company, Inc.
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.