Granted Patent
Utility
US 5,113,387 · App. 07/449,002
Three laser optical disk drive system
Inventors:
Paul S. Goldsmith, William R. Ziegler
Patented Case
View Patent ↗
Granted: May 12, 1992
Filed: Dec 12, 1989
Inventors
Paul S. Goldsmith
William R. Ziegler
Assignee (at issue)
OPTEX CO., LTD.
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.