Granted Patent
Utility
US 5,452,013 · App. 08/324,388
Vertical filter circuit for production of sub-picture
Inventor:
Junichi Ohmori
Patented Case
View Patent ↗
Granted: Sep 19, 1995
Filed: Oct 17, 1994
Inventor
Junichi Ohmori
Assignee (at issue)
NEC 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.