Granted Patent
Utility
US 4,646,281 · App. 06/714,584
Read channel for an optical recorder
Inventor:
Johannes J. Verboom
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Mar 21, 1985
Inventor
Johannes J. Verboom
Assignee (at issue)
Laser Magnetic Storage International Company
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.