Granted Patent
Utility
US 6,596,089 · App. 09/898,427
Subsea pig launcher piston pig
Inventors:
Brian Smith, Jay S. Mandke
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Jul 2, 2001
Inventors
Brian Smith
Jay S. Mandke
Assignees (at issue)
Halliburton Energy Services, Inc.
General Signal UK Limited
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.