Granted Patent
Utility
US 4,453,411 · App. 06/380,688
Pressure memory device
Inventor:
Satoru Shikasho
Patented Case
View Patent ↗
Granted: Jun 12, 1984
Filed: May 21, 1982
Inventor
Satoru Shikasho
Assignee (at issue)
International Telephone and Telegraph 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.