Granted Patent
Utility
US 6,087,901 · App. 09/142,311
Tuning amplifier
Inventors:
Tsutomu Nakanishi, Akira Okamoto
Patented Case
View Patent ↗
Granted: Jul 11, 2000
Filed: Sep 3, 1998
Inventors
Tsutomu Nakanishi
Akira Okamoto
Assignee (at issue)
TIF CORPORATION
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.