Granted Patent
Utility
US 4,522,891 · App. 06/501,156
Support for lithographic printing plate
Inventors:
Akio Iwaki, Norihito Suzuki, Takeshi Yamamoto, Toru Aoki
Patented Case
View Patent ↗
Granted: Jun 11, 1985
Filed: Jun 6, 1983
Inventors
Akio Iwaki
Norihito Suzuki
Takeshi Yamamoto
Toru Aoki
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.