Granted Patent
Utility
US 4,582,480 · App. 06/637,246
Methods of and apparatus for vapor delivery control in optical preform manufacture
Inventors:
Brian Lynch, Pundi L. Narasimham, Fred P. Partus
Patented Case
View Patent ↗
Granted: Apr 15, 1986
Filed: Aug 2, 1984
Inventors
Brian Lynch
Pundi L. Narasimham
Fred P. Partus
Assignee (at issue)
AT&T Technologies Incorporated
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.