Granted Patent
Utility
US 5,452,759 · App. 08/119,813
Whipstock system
Inventors:
Thurman B. Carter, Mark W. Schnitker
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Sep 10, 1993
Inventors
Thurman B. Carter
Mark W. Schnitker
Assignee (at issue)
Weatherford Holding U.S., 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.