Granted Patent
Utility
US 6,252,948 · App. 08/314,451
Telephone note-taking device
Inventor:
Masayoshi Okamoto
Patented Case
View Patent ↗
Granted: Jun 26, 2001
Filed: Sep 28, 1994
Inventor
Masayoshi Okamoto
Assignee (at issue)
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.