Granted Patent
Utility
US 5,415,230 · App. 08/184,427
Method and combination for materials for releasing a stuck pipe
Inventors:
James V. Fisk, Jr., Jeffrey P. Kirsner
Patented Case
View Patent ↗
Granted: May 16, 1995
Filed: Jan 21, 1994
Inventors
James V. Fisk, Jr.
Jeffrey P. Kirsner
Assignee (at issue)
Baroid Technology, 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.