Granted Patent
Utility
US 5,322,246 · App. 07/743,667
Ice prevention device for airfoils
Inventors:
Preston A. Henne, Walter S. Boronow, Samuel L. Wong, Willard D. Himebaugh
Patented Case
View Patent ↗
Granted: Jun 21, 1994
Filed: Aug 12, 1991
Inventors
Preston A. Henne
Walter S. Boronow
Samuel L. Wong
Willard D. Himebaugh
Assignee (at issue)
McDonnell Douglas 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.