Granted Patent
Utility
US 6,517,902 · App. 09/827,672
Methods of treating preform elements
Inventors:
Eric F. Drake, Harold A. Sreshta, Nigel Dennis Griffin
Patented Case
View Patent ↗
Granted: Feb 11, 2003
Filed: Apr 6, 2001
Inventors
Eric F. Drake
Harold A. Sreshta
Nigel Dennis Griffin
Assignee (at issue)
Camco International (UK) 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.