Granted Patent
Utility
US 4,064,481 · App. 05/617,857
Vibrator and processing systems for vibratory seismic operations
Inventor:
Daniel Silverman
Patented Case
View Patent ↗
Granted: Dec 20, 1977
Filed: Sep 29, 1975
Inventor
Daniel Silverman
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.