Granted Patent
Utility
US 4,940,134 · App. 07/271,383
Waste solution treatment method and apparatus therefor
Inventors:
Syozo Aoki, Satoru Kuse, Shigeharu Koboshi
Patented Case
View Patent ↗
Granted: Jul 10, 1990
Filed: Nov 14, 1988
Inventors
Syozo Aoki
Satoru Kuse
Shigeharu Koboshi
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.