Granted Patent
Utility
US 4,718,897 · App. 06/777,142
Nonwoven surgical sponge with x-ray detectable element
Inventor:
John Elves
Patented Case
View Patent ↗
Granted: Jan 12, 1988
Filed: Sep 18, 1985
Inventor
John Elves
Assignee (at issue)
Chicopee
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.