Granted Patent
Utility
US 4,380,387 · App. 06/312,709
Composite information recording apparatus
Inventor:
Tatsuo Yajima
Patented Case
View Patent ↗
Granted: Apr 19, 1983
Filed: Oct 19, 1981
Inventor
Tatsuo Yajima
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.