Granted Patent
Utility
US 6,159,231 · App. 09/495,466
Lifting rib retractor
Inventors:
Christopher S. Looney, Douglas G. Evans
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Feb 1, 2000
Inventors
Christopher S. Looney
Douglas G. Evans
Assignee (at issue)
Genzyme Corporation
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.