Granted Patent
Utility
US 4,641,295 · App. 06/644,265
Disc playback apparatus
Inventors:
Shunsuke Furukawa, Tadao Suzuki, Marinus J. B. M. Monen
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Aug 27, 1984
Inventors
Shunsuke Furukawa
Tadao Suzuki
Marinus J. B. M. Monen
Assignee (at issue)
SONY GROUP 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.