IP Library › Granted Patent US 4,909,816
Granted Patent Utility
US 4,909,816 · App. 06/517,430

Optical fiber fabrication and resulting product

Inventors: John B. MacChesney, Paul O'Connor
Patented Case View Patent ↗
Granted: Mar 20, 1990 Filed: Jul 26, 1983
Inventors
John B. MacChesney
Paul O'Connor
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.

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Quick Facts
Patent No.
US 4,909,816
App. No.
06/517,430
Filed
1983-07-26
Granted
1990-03-20
Kind
A