Granted Patent
Utility
US 4,323,915 · App. 06/139,238
Method and an apparatus for video tape recording
Inventors:
Robert M. Cezar, Alberto Paz
Patented Case
View Patent ↗
Granted: Apr 6, 1982
Filed: Apr 11, 1980
Inventors
Robert M. Cezar
Alberto Paz
Assignee (at issue)
Cezar International, Ltd.
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.