Granted Patent
Utility
US 6,217,822 · App. 09/021,054
Method of making straight fuel cell tubes
Inventor:
Brian P. Borglum
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Feb 9, 1998
Inventor
Brian P. Borglum
Assignee (at issue)
Siemens Westinghouse Power Corporation
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.