Granted Patent
Utility
US 5,157,449 · App. 07/805,977
Method and device for xerographic printing
Inventors:
Junichi Matsuno, Masahiro Yamazaki
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: Dec 12, 1991
Inventors
Junichi Matsuno
Masahiro Yamazaki
Assignees (at issue)
HITACHI, LTD.
Hitachi Koki 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.