Granted Patent
Utility
US 4,025,959 · App. 05/617,611
Recorder-reproducer system
Inventor:
Henry R. Warren
Patented Case
View Patent ↗
Granted: May 24, 1977
Filed: Sep 29, 1975
Inventor
Henry R. Warren
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.