Granted Patent
Utility
US 4,494,851 · App. 06/436,430
Display unit for flashlight photography
Inventors:
Osamu Maida, Hiroshi Hasegawa, Nobuyoshi Hagyuda, Yoshikazu Iida
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Oct 25, 1982
Inventors
Osamu Maida
Hiroshi Hasegawa
Nobuyoshi Hagyuda
Yoshikazu Iida
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.