Granted Patent
Utility
US 5,667,616 · App. 08/527,040
Disc cartridge molding method and apparatus
Inventor:
Takatsugu Funawatari
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Sep 12, 1995
Inventor
Takatsugu Funawatari
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.