Granted Patent
Utility
US 6,551,282 · App. 09/422,414
Universal seal for use with endoscopic cannula
Inventors:
Donald D. Exline, William A. Pierce
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Oct 21, 1999
Inventors
Donald D. Exline
William A. Pierce
Assignee (at issue)
Tyco Healthcare Group LP
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.