Granted Patent
Utility
US 4,415,261 · App. 06/302,587
An improved platen cover for a copying machine
Inventors:
Koji Yukawa, Takashi Murahashi, Isao Sakurai
Patented Case
View Patent ↗
Granted: Nov 15, 1983
Filed: Sep 15, 1981
Inventors
Koji Yukawa
Takashi Murahashi
Isao Sakurai
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.