Granted Patent
Utility
US 5,213,476 · App. 07/873,863
Fan blade
Inventor:
Robert C. Monroe
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: May 26, 1992
Inventor
Robert C. Monroe
Assignee (at issue)
Hudson Products 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.