Granted Patent
Utility
US 6,814,537 · App. 10/253,219
Interchangeable power turbine cartridge assembly
Inventor:
Andrew J. Olsen
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Sep 24, 2002
Inventor
Andrew J. Olsen
Assignee (at issue)
Ingersoll Rand Energy Systems 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.