Granted Patent
Utility
US 4,670,869 · App. 06/567,610
Switching laser beam apparatus with recombined beam for recording
Inventor:
Di Chen
Patented Case
View Patent ↗
Granted: Jun 2, 1987
Filed: Jan 3, 1984
Inventor
Di Chen
Assignee (at issue)
Magnetic Peripherals, Inc.
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.