Granted Patent
Utility
US 4,778,342 · App. 06/920,168
Turbine blade retainer
Inventor:
Frank J. Conlow
Patented Case
View Patent ↗
Granted: Oct 18, 1988
Filed: Oct 17, 1986
Inventor
Frank J. Conlow
Assignee (at issue)
IMO Delaval Incorporated
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.