Granted Patent
Utility
US 4,620,768 · App. 06/494,076
Optical scanning system
Inventors:
Kimio Tatsuno, Keiji Kataoka, Yoshifumi Homma, Yoshifumi Ono
Patented Case
View Patent ↗
Granted: Nov 4, 1986
Filed: May 12, 1983
Inventors
Kimio Tatsuno
Keiji Kataoka
Yoshifumi Homma
Yoshifumi Ono
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.