Granted Patent
Utility
US 4,689,065 · App. 06/829,527
Optical waveguide glass fiber flame processing
Inventor:
John T. Krause
Patented Case
View Patent ↗
Granted: Aug 25, 1987
Filed: Feb 14, 1986
Inventor
John T. Krause
Assignee (at issue)
American Telephone and Telegraph Company, AT&T Bell Laboratories
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.