Granted Patent
Utility
US 4,253,863 · App. 05/804,207
Apparatus for mass producing fiber optic preforms and optic fibers
Inventor:
Rama Iyengar
Patented Case
View Patent ↗
Granted: Mar 3, 1981
Filed: Jun 7, 1977
Inventor
Rama Iyengar
Assignee (at issue)
International Telephone and Telegraph Corporation
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.