Granted Patent
Utility
US 6,169,847 · App. 08/947,019
Portable DVD player
Inventors:
Tetsuya Mizoguchi, Masayuki Sato, Hiroyuki Sakamoto
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Oct 8, 1997
Inventors
Tetsuya Mizoguchi
Masayuki Sato
Hiroyuki Sakamoto
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.