Granted Patent
Utility
US 4,707,121 · App. 06/818,619
Copying apparatus
Inventors:
Akira Sawaki, Seitaro Kasahara
Patented Case
View Patent ↗
Granted: Nov 17, 1987
Filed: Jan 13, 1986
Inventors
Akira Sawaki
Seitaro Kasahara
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.