Granted Patent
Utility
US 4,437,733 · App. 06/280,102
Zoom lens
Inventors:
Tomowaki Takahashi, Kunio Konno, Toshihiro Sasaya
Patented Case
View Patent ↗
Granted: Mar 20, 1984
Filed: Jul 2, 1981
Inventors
Tomowaki Takahashi
Kunio Konno
Toshihiro Sasaya
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.