Granted Patent
Utility
US 6,090,138 · App. 09/012,498
Universal heart valve holder
Inventors:
Frank Edward Chasak, Paul E. Whiting
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: Jan 23, 1998
Inventors
Frank Edward Chasak
Paul E. Whiting
Assignee (at issue)
Sulzer Carbomedics 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.