Granted Patent
Utility
US 4,470,134 · App. 06/362,352
Marsh case for a geophone
Inventor:
William O. McNeel
Patented Case
View Patent ↗
Granted: Sep 4, 1984
Filed: Mar 26, 1982
Inventor
William O. McNeel
Assignee (at issue)
Litton Resources Systems, 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.