Granted Patent
Utility
US 4,570,252 · App. 06/483,808
Optical data retrieval system using multi-spectral light sources
Inventor:
Jerome Drexler
Patented Case
View Patent ↗
Granted: Feb 11, 1986
Filed: Apr 11, 1983
Inventor
Jerome Drexler
Assignee (at issue)
Drexler Technology Corporation
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.