Granted Patent
Utility
US 4,967,601 · App. 07/388,830
Viscoelasticity measuring apparatus
Inventor:
Yoshihiko Teramoto
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: Aug 3, 1989
Inventor
Yoshihiko Teramoto
Assignee (at issue)
SEIKO INSTRUMENTS INC.
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.