Granted Patent
Utility
US 4,592,624 · App. 06/670,928
Objective lens for microscope of low magnification
Inventors:
Kazuo Ushida, Masashi Tanaka, Yoshiyuki Shimizu
Patented Case
View Patent ↗
Granted: Jun 3, 1986
Filed: Nov 13, 1984
Inventors
Kazuo Ushida
Masashi Tanaka
Yoshiyuki Shimizu
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.