Granted Patent
Utility
US 5,441,391 · App. 08/177,531
Air propelling apparatus with fan shaft mounted on guards
Inventors:
Gordon Frost, Edward W. Strubel, Jr.
Patented Case
View Patent ↗
Granted: Aug 15, 1995
Filed: Jan 5, 1994
Inventors
Gordon Frost
Edward W. Strubel, Jr.
Assignee (at issue)
Patton Electric Company, Inc.
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.