Granted Patent
Utility
US 6,094,413 · App. 09/225,844
Optical recording systems
Inventor:
John M. Guerra
Patented Case
View Patent ↗
Granted: Jul 25, 2000
Filed: Dec 31, 1998
Inventor
John M. Guerra
Assignee (at issue)
Polaroid 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.