Granted Patent
Utility
US 4,806,000 · App. 06/826,985
Zoom lens capable of macro photography
Inventors:
Yoshiharu Shiokama, Naoto Ohta, Hiroshi Okano, Kiyotaka Inadome
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Feb 7, 1986
Inventors
Yoshiharu Shiokama
Naoto Ohta
Hiroshi Okano
Kiyotaka Inadome
Assignee (at issue)
NIKON CORPORATION
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.