Granted Patent
Utility
US 4,649,909 · App. 06/329,973
Composite surgical dressing
Inventor:
Darrell R. Thompson
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: Dec 11, 1981
Inventor
Darrell R. Thompson
Assignee (at issue)
Johnson & Johnson Products, Inc.
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.