Granted Patent
Utility
US 5,469,916 · App. 08/214,720
System for depth measurement in a wellbore using composite coiled tubing
Inventors:
Alex Sas-Jaworsky, Jerry G. Williams
Patented Case
View Patent ↗
Granted: Nov 28, 1995
Filed: Mar 17, 1994
Inventors
Alex Sas-Jaworsky
Jerry G. Williams
Assignee (at issue)
Conoco 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.