Granted Patent
Utility
US 6,280,787 · App. 09/070,101
Gas flushing method
Inventor:
Michael R. Perry
Patented Case
View Patent ↗
Granted: Aug 28, 2001
Filed: Apr 27, 1998
Inventor
Michael R. Perry
Assignee (at issue)
The Pillsbury Company
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.