Granted Patent
Utility
US 4,657,366 · App. 06/854,886
Shutter device for camera
Inventors:
Yoshiaki Tanabe, Akira Katayama, Masanori Hasuda
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Apr 23, 1986
Inventors
Yoshiaki Tanabe
Akira Katayama
Masanori Hasuda
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.