Granted Patent
Utility
US 4,296,423 · App. 06/066,423
Device for adjusting image density in composite information recording apparatus
Inventor:
Hiroya Nakamura
Patented Case
View Patent ↗
Granted: Oct 20, 1981
Filed: Aug 14, 1979
Inventor
Hiroya Nakamura
Assignee (at issue)
Konishiroku Photo Industry Co., Ltd.
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.