Granted Patent
Utility
US 5,660,909 · App. 08/530,671
Sheet for measuring ultrasonic waves
Inventors:
Katsuro Tachibana, Shunro Tachibana
Patented Case
View Patent ↗
Granted: Aug 26, 1997
Filed: Sep 19, 1995
Inventors
Katsuro Tachibana
Shunro Tachibana
Assignee (at issue)
EKOS 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.