Granted Patent
Utility
US 6,677,862 · App. 09/313,050
Transmitter tolerant to crystal variations
Inventors:
Thomas Sean Houlihane, Andrew Gordon Summers
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: May 17, 1999
Inventors
Thomas Sean Houlihane
Andrew Gordon Summers
Assignee (at issue)
SchlumbergerSema 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.