Granted Patent
Utility
US 4,766,034 · App. 07/132,681
Magnetic recording medium
Inventors:
Toshihiko Sato, Takeshi Kitamura, Shinsaku Nagaoka
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Dec 14, 1987
Inventors
Toshihiko Sato
Takeshi Kitamura
Shinsaku Nagaoka
Assignee (at issue)
Konishiroku Photo Industry Co., Ltd.
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.