Granted Patent
Utility
US 4,329,697 · App. 06/054,437
Information record
Inventor:
Alan E. Bell
Patented Case
View Patent ↗
Granted: May 11, 1982
Filed: Jul 3, 1979
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.