Granted Patent
Utility
US 4,614,700 · App. 06/794,618
Image forming process with magnetic brush development
Inventors:
Yoko Yamamoto, Kunio Shigeta, Jiro Takahashi
Patented Case
View Patent ↗
Granted: Sep 30, 1986
Filed: Nov 4, 1985
Inventors
Yoko Yamamoto
Kunio Shigeta
Jiro Takahashi
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.