Granted Patent
Utility
US 5,187,403 · App. 07/520,681
Acoustic image signal receiver providing for selectively activatable amounts of electrical signal delay
Inventor:
John D. Larson, III
Patented Case
View Patent ↗
Granted: Feb 16, 1993
Filed: May 8, 1990
Inventor
John D. Larson, III
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.