Granted Patent
Utility
US 6,371,681 · App. 09/400,513
Anti-rotation clip
Inventors:
C. Ed Covington, Clifton B. Day, Joseph John Zierer
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: Sep 20, 1999
Inventors
C. Ed Covington
Clifton B. Day
Joseph John Zierer
Assignee (at issue)
Bell Helicopter Textron 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.