Granted Patent
Utility
US 4,705,389 · App. 06/899,215
Method for both-side copying and apparatus therefore
Inventors:
Yoshikazu Maekawa, Susumu Okui
Patented Case
View Patent ↗
Granted: Nov 10, 1987
Filed: Aug 21, 1986
Inventors
Yoshikazu Maekawa
Susumu Okui
Assignee (at issue)
Konishiroku Photo Ind. 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.