Granted Patent
Utility
US 4,270,150 · App. 05/763,371
Video frame storage recording and reproducing apparatus
Inventors:
Joachim P. Diermann, Thomas Ritchey
Patented Case
View Patent ↗
Granted: May 26, 1981
Filed: Jan 28, 1977
Inventors
Joachim P. Diermann
Thomas Ritchey
Assignee (at issue)
Ampex 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.