Granted Patent
Utility
US 4,694,648 · App. 06/714,091
Anti-plug control
Inventor:
Richard Beck, Jr.
Patented Case
View Patent ↗
Granted: Sep 22, 1987
Filed: Mar 20, 1985
Inventor
Richard Beck, Jr.
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.