Granted Patent
Utility
US 4,296,483 · App. 06/164,622
Method and means for measuring geophone parameters
Inventor:
Harry K. Haill
Patented Case
View Patent ↗
Granted: Oct 20, 1981
Filed: Jun 30, 1980
Inventor
Harry K. Haill
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.