Granted Patent
Utility
US 6,552,853 · App. 09/747,918
Radiation beam combiner
Inventor:
Douglas S. Goodman
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Dec 22, 2000
Inventor
Douglas S. Goodman
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.