Granted Patent
Utility
US 4,803,525 · App. 06/933,416
Variable magnification copying machine
Inventor:
Mitsuru Nagoshi
Patented Case
View Patent ↗
Granted: Feb 7, 1989
Filed: Nov 21, 1986
Inventor
Mitsuru Nagoshi
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.