Granted Patent
Utility
US 5,984,871 · App. 08/909,577
Ultrasound transducer with extended focus
Inventors:
Harm TenHoff, James D. Koger
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: Aug 12, 1997
Inventors
Harm TenHoff
James D. Koger
Assignee (at issue)
Boston Scientific Technologies, 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.