Granted Patent
Utility
US 4,408,213 · App. 06/316,916
Reinforced bubble recording medium and information record
Inventor:
Alan E. Bell
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: Oct 30, 1981
Inventor
Alan E. Bell
Assignee (at issue)
RCA 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.