Granted Patent
Utility
US 5,190,448 · App. 07/730,184
Tube placement and retention member
Inventors:
John A. Lane, Frederick C. Deno, Frederick F. Schweitzer, Jr.
Patented Case
View Patent ↗
Granted: Mar 2, 1993
Filed: Jul 12, 1991
Inventors
John A. Lane
Frederick C. Deno
Frederick F. Schweitzer, Jr.
Assignee (at issue)
Sherwood Medical Company
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.