Granted Patent
Utility
US 4,688,903 · App. 06/746,623
Wide angle lens
Inventors:
Hisao Fujita, Hiroyuki Yamazaki, Tomoko Wakabayashi
Patented Case
View Patent ↗
Granted: Aug 25, 1987
Filed: Jun 19, 1985
Inventors
Hisao Fujita
Hiroyuki Yamazaki
Tomoko Wakabayashi
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.