Granted Patent
Utility
US 4,007,481 · App. 05/578,093
Holographic color television record
Inventor:
Daniel St. John
Patented Case
View Patent ↗
Granted: Feb 8, 1977
Filed: May 16, 1975
Inventor
Daniel St. John
Assignee (at issue)
Holotron 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.