Granted Patent
Utility
US 4,714,938 · App. 07/007,171
Warning apparatus for camera
Inventors:
Kazuyuki Kazami, Toshiyuki Nakamura, Hiroshi Wakabayashi
Patented Case
View Patent ↗
Granted: Dec 22, 1987
Filed: Jan 27, 1987
Inventors
Kazuyuki Kazami
Toshiyuki Nakamura
Hiroshi Wakabayashi
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.