Granted Patent
Utility
US 5,351,389 · App. 07/973,681
Method for fabricating a contoured triangular transducer system
Inventors:
John H. Erickson, John C. Tepper
Patented Case
View Patent ↗
Granted: Oct 4, 1994
Filed: Nov 9, 1992
Inventors
John H. Erickson
John C. Tepper
Assignee (at issue)
AMEI 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.