Granted Patent
Utility
US 4,310,233 · App. 06/195,492
Film feed detecting device of a camera
Inventors:
Takeshi Okuyama, Toshiaki Hozumi, Hiroshi Wakabayashi
Patented Case
View Patent ↗
Granted: Jan 12, 1982
Filed: Oct 9, 1980
Inventors
Takeshi Okuyama
Toshiaki Hozumi
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.