Granted Patent
Utility
US 4,674,591 · App. 06/834,638
Method and apparatus for seismic exploration
Inventor:
Wayne V. Vogen
Patented Case
View Patent ↗
Granted: Jun 23, 1987
Filed: Feb 28, 1986
Inventor
Wayne V. Vogen
Assignee (at issue)
URS Corporation
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.