Granted Patent
Utility
US 5,730,188 · App. 08/728,957
Flexible conduit
Inventors:
Mark D. Kalman, Bin Chen
Patented Case
View Patent ↗
Granted: Mar 24, 1998
Filed: Oct 11, 1996
Inventors
Mark D. Kalman
Bin Chen
Assignee (at issue)
Wellstream, 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.