Granted Patent
Utility
US 4,214,815 · App. 05/913,018
Semi-wide angle objective lens
Inventor:
Toshiko Shimokura
Patented Case
View Patent ↗
Granted: Jul 29, 1980
Filed: Jun 6, 1978
Inventor
Toshiko Shimokura
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.