Granted Patent
Utility
US 6,408,020 · App. 09/380,517
Dual-mode radio communication device having function for selectively using analog or digital mode
Inventors:
Naoki KAJI, Osamu Kurokawa, Akira Ishikura, Yoshihiro Nomura, Masakuni Hyodo, Ken Nakamura, Yoshimasa Takahashi
Patented Case
View Patent ↗
Granted: Jun 18, 2002
Filed: Sep 3, 1999
Inventors
Naoki KAJI
Osamu Kurokawa
Akira Ishikura
Yoshihiro Nomura
Masakuni Hyodo
Ken Nakamura
Yoshimasa Takahashi
Assignee (at issue)
Kabushiki Kaisha Toshiba
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.