Granted Patent
Utility
US 6,192,713 · App. 09/340,473
Apparatus for the manufacture of glass preforms
Inventors:
Ying Zhang, Brian M. Laliberte, Ray F. Robinson
Patented Case
View Patent ↗
Granted: Feb 27, 2001
Filed: Jun 30, 1999
Inventors
Ying Zhang
Brian M. Laliberte
Ray F. Robinson
Assignee (at issue)
SDL Limited
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.