Granted Patent
Utility
US 4,542,324 · App. 06/451,368
Overtemperature speed control for a variable speed drive
Inventor:
John M. Leuthen
Patented Case
View Patent ↗
Granted: Sep 17, 1985
Filed: Dec 20, 1982
Inventor
John M. Leuthen
Assignee (at issue)
Hughes Tool Company LLC
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.