Granted Patent
Utility
US 4,627,699 · App. 06/694,320
Automatic focusing adaptor for camera lens
Inventor:
Tadao Takagi
Patented Case
View Patent ↗
Granted: Dec 9, 1986
Filed: Jan 24, 1985
Inventor
Tadao Takagi
Assignee (at issue)
Nippon Kogaku K.K.
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.