Granted Patent
Utility
US 4,807,070 · App. 07/071,418
Supporting structure for dual magnetic head
Inventors:
Shin Isozaki, Michio Yagi
Patented Case
View Patent ↗
Granted: Feb 21, 1989
Filed: Jul 9, 1987
Inventors
Shin Isozaki
Michio Yagi
Assignee (at issue)
Konishiroku Photo Industries 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.