Granted Patent
Utility
US 5,946,271 · App. 08/822,299
Calibration system for use in time lapse tomography
Inventor:
William H. Dragoset, Jr.
Patented Case
View Patent ↗
Granted: Aug 31, 1999
Filed: Mar 21, 1997
Inventor
William H. Dragoset, Jr.
Assignee (at issue)
Western Atlas International, 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.