Granted Patent
Utility
US 4,453,816 · App. 06/445,286
Method and means for controlling the aperture blades of a camera through pulse motors
Inventor:
Fumiaki Hiraike
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: Nov 29, 1982
Inventor
Fumiaki Hiraike
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.