Granted Patent
Utility
US 4,448,021 · App. 06/341,238
Anti-stall control
Inventor:
Royal R. Hawkins
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Jan 21, 1982
Inventor
Royal R. Hawkins
Assignee (at issue)
Sundstrand 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.