Granted Patent
Utility
US 4,256,852 · App. 06/010,264
Binder composition for magnetic recording tape
Inventors:
Tunehide Naruse, Ikuo Matsumoto
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Feb 7, 1979
Inventors
Tunehide Naruse
Ikuo Matsumoto
Assignee (at issue)
Victor Company of Japan, 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.