Granted Patent
Utility
US 4,440,556 · App. 06/391,273
Optical fiber drawing using plasma torch
Inventors:
Shin M. Oh, Dilip K. Nath, Pablo C. Pureza
Patented Case
View Patent ↗
Granted: Apr 3, 1984
Filed: Jun 23, 1982
Inventors
Shin M. Oh
Dilip K. Nath
Pablo C. Pureza
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.