Granted Patent
Utility
US 4,408,307 · App. 06/209,638
Optical transmission of digital seismic data
Inventor:
Ralph A. Harris
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Nov 24, 1980
Inventor
Ralph A. Harris
Assignee (at issue)
Texas Instruments Incorporated
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.