Granted Patent
Utility
US 4,564,919 · App. 06/450,785
Correlation calculating apparatus
Inventor:
Ken Utagawa
Patented Case
View Patent ↗
Granted: Jan 14, 1986
Filed: Dec 17, 1982
Inventor
Ken Utagawa
Assignee (at issue)
Nippon Kogaku K.K.
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.