Granted Patent
Utility
US 5,475,652 · App. 08/085,502
Dual gimbal geophone
Inventors:
William O. McNeel, Joe N. Wood
Patented Case
View Patent ↗
Granted: Dec 12, 1995
Filed: Jun 30, 1993
Inventors
William O. McNeel
Joe N. Wood
Assignee (at issue)
I/O Exploration Products
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.