Granted Patent
Utility
US 4,489,765 · App. 06/398,204
Method of supplying a fine-particle powder
Inventors:
Noboru Yamada, Keisuke Yamaguchi
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Jul 14, 1982
Inventors
Noboru Yamada
Keisuke Yamaguchi
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.