Granted Patent
Utility
US 5,452,614 · App. 08/135,483
Dynamic viscoelasticity apparatus
Inventors:
Hidetaka Kato, Nobutaka Nakamura
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Oct 13, 1993
Inventors
Hidetaka Kato
Nobutaka Nakamura
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.