Granted Patent
Utility
US 6,473,628 · App. 09/179,664
Telephone set
Inventors:
Hidehiko Kuno, Junko Nagatani
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Oct 27, 1998
Inventors
Hidehiko Kuno
Junko Nagatani
Assignees (at issue)
SANYO ELECTRIC CO., LTD.
TOTTORI SANYO ELECTRIC CO., LTD.
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.