Granted Patent
Utility
US 4,599,717 · App. 06/578,148
Direct read after write verify using differential detection
Inventors:
Rodger R. Bracht, Johannes J. Verboom
Patented Case
View Patent ↗
Granted: Jul 8, 1986
Filed: Feb 8, 1984
Inventors
Rodger R. Bracht
Johannes J. Verboom
Assignee (at issue)
Optical Storage International
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.