Granted Patent
Utility
US 5,015,236 · App. 07/434,792
Intermittent patient suction system, self-contained control device therefor and methods of making the same
Inventor:
Jay L. Lewis
Patented Case
View Patent ↗
Granted: May 14, 1991
Filed: Nov 13, 1989
Inventor
Jay L. Lewis
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.